Manufacturer product photo · industrial 32-port rack-mount serial device server
ZJTS832
Industrial Serial Device Server · 32×RS-232/485
Industrial 32-Port Rack-Mount Serial Device Server · 2×RJ45 + Console · RS-232/485 · AC220V
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◆32×RS-232/485 Serial
◆2×RJ45 + Console
◆1U Rack-Mount
◆AC220V Wide-Range
◆-40~75°C Optional
◆5-Year Warranty
Overview
The ZJTS832 is an industrial serial device server that supports up to 32 RS-232/485 serial ports alongside 2 × 10/100Base-T RJ45 Ethernet ports and a dedicated RS-232 Console port (9600bps, 8,N,1) for local setup. Housed in a 1U IP40 metal enclosure (44×212×440 mm) for standard rack mounting, it is powered by AC220V (85–264VAC/77–300VDC) with reverse-polarity and overload protection, drawing a maximum of 4 W, and supports DHCP/Telnet/TCP/UDP/ICMP/ARP/Modbus TCP/IP with a real COM driver for Windows NT/2000/XP/Vista/7/10/11. Every serial port carries built-in 15KV ESD surge protection, an optional wide-temperature version operates from -40 to +75°C, and the unit is backed by a 5-year warranty.
Is This the Right Fit?
Six real deployment scenarios matched to this model's actual datasheet specifications.
Legacy Serial Fleet IP NetworkingUp to 32 flexibly combinable RS-232/485 serial ports let an entire fleet of legacy serial equipment go online over the 2 × 10/100Base-T Ethernet ports at once — a core legacy serial to IP use case.
PLC Automation Cell IntegrationBuilt-in Modbus TCP/IP protocol support (alongside DHCP/Telnet/TCP/UDP/ICMP/ARP) lets PLCs and automation controllers on the serial side reach an Ethernet-based SCADA/MES network directly.
Outdoor / Unheated Equipment RoomThe optional wide-temperature version operates from -40 to +75°C, matching unheated substation rooms or outdoor cabinets exposed to seasonal extremes.
32-Port Ultra-High-Density ConsolidationA single 1U (44×212×440 mm) chassis carries 32 RS-232/485 ports — the highest port count in this series — replacing several smaller 4/8-port serial servers and freeing rack space.
Large Substation / Factory Full-Site Serial Networking32 terminal-block RS-232/485 ports let one unit take in an entire substation or workshop's field serial devices (protection relays, meters, PLCs) in a single connection round instead of deploying multiple smaller boxes.
Field Wiring in Surge-Prone Switchgear YardsBuilt-in 15KV ESD surge protection on every serial port, plus AC220V input rated 85–264VAC/77–300VDC with reverse-polarity & overload protection, suits field wiring runs near switchgear and power equipment.
Not a good fit if:
- Single AC220V power input only — no redundant dual-power option; sites needing power-loss redundancy should plan an external UPS.
- Default 1U 19-inch rack-mount chassis — not a DIN-rail/wall-mount unit for small cabinets.
- IP40 metal enclosure only — direct outdoor rain/dust exposure needs additional cabinet protection.
Key Features
- 10/100M adaptive Ethernet port for fast IP networking of serial devices
- High-performance processor with large memory capacity
- Remote parameter configuration via web browser
- Built-in 15KV ESD surge protection on all serial ports
- Intuitive Chinese/English menu setup interface for simpler installation
- RS-232/485 serial ports flexibly combinable
- Custom products available · terminal-block power connector for convenient wiring
- Default rack-mount installation
Specifications
Performance
| CPU | 32 bit 100MHz |
| Memory | 2MB |
| Ethernet Rate | 10/100 Mbps adaptive, manual setting supported |
| Communication Mode | 10M half/full duplex, 100M half/full duplex |
| Port Protection | 15KV electromagnetic isolation |
Serial Interfaces
| RJ45 Ethernet Ports | 2 × 10/100Base-T(X) |
| Console Port | RS-232, RJ45, 9600bps, 8,N,1 |
| Serial Ports | 32 × RS-232/485 serial ports |
| Port Connector Type | RS-232/485 terminal-block interface |
| RS-232 Signal | TxD, RxD, GND |
| RS-485 Signal (2-wire) | Data+, Data-, GND |
| Data Bits | 5, 6, 7, 8 |
| Parity | None, Even, Odd, Space, Mark |
| Stop Bits | 1, 2 |
| Flow Control | RTS/CTS, XON/XOFF |
| Baud Rate | 300 bps – 230.4 Kbps |
| Protocols | DHCP, Telnet, TCP, UDP, IP, ICMP, ARP, Modbus TCP/IP |
| Real COM Driver | Windows NT/2000/XP/Vista/7/10/11 |
Power
| 220V Input | 3-pin terminal; supported range 85–264VAC / 77–300VDC |
| Power Consumption | Max 4 W |
| Power Protection | Reverse-polarity & overload protection |
Environment
| Standard Temp | -10 ~ +60°C |
| Wide Temp | -40 ~ +75°C |
| Storage Temp | -40 ~ +85°C |
| Humidity | 5–95% non-condensing |
Physical
| Housing | IP40 metal enclosure |
| Mounting | Default rack mount |
| Dimensions | 44 (H) × 212 (D) × 440 (W) mm |
Certification
| EMC | CE, FCC |
| EMI | FCC Part 15, EN 55032 (CISPR 32) Class A |
| EMS | EN61000-4-2/3/4/5/6/8 Level 3 |
| Shock | IEC60068-2-27 |
| Free Fall | IEC60068-2-32 |
| Vibration | IEC60068-2-6 |
| Green | RoHS, WEEE |
Reliability
| MTBF | 320,000 hours |
| Warranty | 5 years |
Models & Ordering
| Model | Product Description | Price |
|---|---|---|
| ZJTS832-S-232 | 32-port RS-232 serial device server, 2 × 10/100M adaptive Ethernet, rack-mount, AC220V. | |
| ZJTS832-S-485 | 32-port RS-485 serial device server, 2 × 10/100M adaptive Ethernet, rack-mount, AC220V. | |
| ZJTS832-M | 32-port RS-232/485 combo (mixed) serial device server, 2 × 10/100M adaptive Ethernet, rack-mount, AC220V. |
This page covers the ZJTS832 series: -S-232 = 32 × RS-232 serial ports; -S-485 = 32 × RS-485 serial ports; -M = 32 × RS-232/485 combo (mixed) serial ports. All variants share 2 × 10/100Base-T Ethernet ports, an RS-232 Console port, and AC220V (85–264VAC/77–300VDC) power. The requested model is ZJTS832.
Dimensions
unit: mm
Your Brand. Factory-Direct Supply.Neutral casing, ready for your logo · Custom port/power options · Small batches welcome.
Custom & OEM →Who uses it, where it goes and how to install it
Written for the ZJTS832 series from its own datasheet: 1U 19-inch rack, 32 × RS-232/485 serial ports, 300 bps to 230.4Kbps, 2 × 10/100Base-T(X) Ethernet, RS-232 console port, TCP/UDP and Modbus TCP/IP, virtual COM driver, 85–264VAC / 77–300VDC power.
Who it is for
- SCADA control rooms and substations — 32 RS-485 or RS-232 links from relays, RTUs and meters terminate in one rack unit next to the SCADA servers; the 77–300VDC input range covers a 110 V or 220 V station battery as well as 220 V mains.
- Network and telecom rooms — With the -S-232 version, the RS-232 console ports of up to 32 routers, switches or other rack equipment can be reached over the network for out-of-band configuration, with TxD/RxD/GND wired to each console.
- Machine shops and MES data collection — Up to 32 CNC controls, weighing stations or test rigs with RS-232 ports can be reached from one rack in the server room, for program transfer or production data, instead of one PC or small server per machine.
- Integrators with a 19-inch cabinet — The ZJTS832 takes 1U (440 × 44 × 212 mm) next to switches and servers, and the dedicated RS-232 console port (RJ45, 9600bps 8-N-1) allows local commissioning even before the network is up.
Where and how to install
- In the rack — Mounting is 1U 19-inch rack by default; the chassis is 212 mm deep, so it fits shallow wall cabinets too. Leave the 1U above or below free, or fit a cable-management panel, because 32 serial terminal cables plus 2 LAN cables arrive at one unit.
- Serial wiring and labelling — All 32 ports are terminal blocks: RS-232 TxD, RxD, GND, or RS-485 2-wire Data+, Data-, GND. Label each cable with the port number and the device it serves, use shielded twisted pair for RS-485 with the shield grounded at the rack end only, and keep the same Data+/Data- polarity on every device.
- Bus length and termination — As general practice, keep RS-232 runs to about 15 m; RS-485 can run up to about 1200 m at low baud rates, less at 115.2K or 230.4K. Wire RS-485 as a daisy chain, not a star, and fit 120 Ω termination only at the two far ends of each bus.
- Power — Power is AC220V only through a 3-pin terminal, accepting 85–264VAC or 77–300VDC, with reverse-polarity and overload protection; there is no 5–24VDC input on this model and no second power input. Feed it from the rack PDU on a UPS-backed circuit, or from the station DC system, and earth the chassis to the rack ground bar.
- Surge, ESD and environment — All 32 serial ports have 15KV ESD protection and the unit is tested to EN61000-4-5 surge Level 3; galvanic isolation is not listed, so put RS-485 surge protectors on every line that leaves the building. IP40 metal housing for equipment rooms and closed cabinets; standard -10 ~ +60°C, wide -40 ~ +75°C, 5–95% non-condensing.
Link planning: which ZJTS832 version
All three versions have 32 serial ports, 2 LAN ports, the RS-232 console and AC220V power in the same 1U chassis; only the serial interface type changes.
| ZJTS832-S-232 | ZJTS832-S-485 | ZJTS832-M | |
|---|---|---|---|
| Serial ports | 32 × RS-232 | 32 × RS-485 (2-wire) | 32 × RS-232/485 (2-in-1) |
| Signals | TxD, RxD, GND | Data+, Data-, GND | TxD, RxD, GND / Data+, Data-, GND |
| Typical cable length (general practice) | ~15 m | up to ~1200 m at low baud | ~15 m / up to ~1200 m |
| Baud rate | 300 bps – 230.4Kbps | 300 bps – 230.4Kbps | 300 bps – 230.4Kbps |
| Ethernet ports | 2 × 10/100Base-T(X) | 2 × 10/100Base-T(X) | 2 × 10/100Base-T(X) |
| Console port | RS-232, RJ45, 9600bps 8-N-1 | RS-232, RJ45, 9600bps 8-N-1 | RS-232, RJ45, 9600bps 8-N-1 |
| Peak serial data, all 32 ports at 230.4K | ~7.4 Mbps | ~7.4 Mbps | ~7.4 Mbps |
| Virtual COM driver | Windows NT/2000/XP/Vista/7/10/11 | Windows NT/2000/XP/Vista/7/10/11 | Windows NT/2000/XP/Vista/7/10/11 |
| Power input / consumption | 85–264VAC / 77–300VDC; max 4 W | 85–264VAC / 77–300VDC; max 4 W | 85–264VAC / 77–300VDC; max 4 W |
| Operating temperature | -10 ~ +60°C (wide -40 ~ +75°C) | -10 ~ +60°C (wide -40 ~ +75°C) | -10 ~ +60°C (wide -40 ~ +75°C) |
| Mounting / size | 1U rack, 440×44×212 mm | 1U rack, 440×44×212 mm | 1U rack, 440×44×212 mm |
- Pick -S-485 when most of the 32 ports serve meter, relay or sensor buses; one bus per port keeps each poll cycle short.
- Pick -S-232 for console servers and instruments in the same rack or room (about 15 m), and -M for a mixed installation.
Specifications from the ZJTS832 manufacturer datasheet. Peak serial data = 32 × 230.4 kbps; cable lengths are general RS-232/RS-485 practice, not datasheet values.
32-Port Serial Device Server FAQ — ZJTS832
How many serial lines can one ZJTS832 replace?
One unit supports up to 32 RS-232/485 serial ports on terminal-block interfaces, plus 2 × 10/100Base-T RJ45 Ethernet ports — the highest density in the ZJTS family. That consolidates a whole floor of meters, controllers or legacy field devices into a single 1U chassis.
How is the ZJTS832 installed and how much space does it take?
It rack-mounts by default in a 1U IP40 metal enclosure of 44×212×440 mm, fitting any standard 19-inch cabinet. Despite 32 active serial channels it draws a maximum of 4 W from its AC220V input (85–264VAC / 77–300VDC wide range), with reverse-polarity and overload protection.
Can I manage it without network access?
Yes — a dedicated RS-232 Console port (RJ45, 9600 bps, 8,N,1) gives local setup even before the network exists. Once online, it supports DHCP, Telnet, TCP, UDP, ICMP, ARP and Modbus TCP/IP, and the real COM driver for Windows NT/2000/XP/Vista/7/10/11 maps all 32 ports into your software.
What serial parameters do the 32 ports support?
Each RS-232/485 port runs 300 bps to 230.4 Kbps with data bits 5–8, parity None/Even/Odd/Space/Mark, 1 or 2 stop bits, and RTS/CTS or XON/XOFF flow control. RS-232 wiring is TxD/RxD/GND; 2-wire RS-485 is Data+/Data-/GND. Every port carries built-in 15KV ESD surge protection.
How reliable is it for 24/7 operation?
MTBF is rated at 320,000 hours, backed by a 5-year warranty. It passes EN61000-4-2/3/4/5/6/8 EMC tests at Level 3 and IEC60068 shock, free-fall and vibration standards. Standard operating range is -10 to +60°C, with a wide-temperature option covering -40 to +75°C.
Can the ZJTS832 connect Modbus RTU meters to a SCADA that speaks Modbus TCP?
Modbus TCP/IP is in its protocol list, so this is the intended use: the SCADA polls the ZJTS832 over Ethernet and the unit forwards the requests to the RTU devices on its serial ports. The datasheet does not describe the gateway settings in detail (slave ID routing, response timeout), so send us your SCADA and meter models and we will confirm the setup before you order. If your software only speaks Modbus RTU on a COM port, use the virtual COM driver instead.
Which Windows versions does the ZJTS832 virtual COM driver support, and how many COM ports will I get?
The datasheet lists Windows NT/2000/XP/Vista/7/10/11. Each of the 32 serial ports is mapped to its own COM number on the PC, so software written for a local COM port keeps working without changes. Linux and macOS drivers are not listed; on those systems, or for new software, connect over TCP/UDP or Modbus TCP/IP instead of a virtual COM port. Ask us for the current driver and setup tool when you order.
How should I plan RS-485 buses across the 32 ports of the ZJTS832?
The datasheet gives no node limit per port. As general RS-485 practice, plan up to 32 standard unit loads per bus and up to about 1200 m at 9600 bps, daisy-chained with 120 Ω at both ends. With 32 ports you can often give each bay, feeder or machine its own port, so polling runs in parallel and a fault on one cable affects only that bus. Keep a few ports spare for later additions and record the port-to-device map in the web configuration.
Is the 10/100M Ethernet of the ZJTS832 fast enough for all 32 serial ports at full speed?
Yes, by a wide margin. Even with all 32 ports streaming continuously at the maximum 230.4Kbps, the serial data adds up to about 7.4 Mbps (32 × 230.4 kbps), well below the 100 Mbps port; real Modbus polling uses far less. The limits you will meet first are the serial side (baud rate, number of devices per bus, device response time) and the response timeout set in your SCADA, not the network port. Set the Ethernet port to auto-negotiate, or fix speed and duplex to match the switch port.
Do the two LAN ports on the ZJTS832 provide network redundancy?
Not as a listed feature: the datasheet gives 2 × 10/100Base-T(X) but no ring, RSTP, failover or dual-IP function, and the unit is a serial gateway, not a switch. Use the second port as an extra connection point (for example a local engineering laptop). If the link must survive a cable or switch failure, connect the ZJTS832 to an industrial ring switch and back up its power with a UPS; tell us your topology and we will confirm before you order.
Can the ZJTS832 run from a 110 V or 220 V DC station battery?
Yes, on paper: the 3-pin 220V input accepts 85–264VAC or 77–300VDC, and both 110 V and 220 V DC systems fall inside that range, with reverse-polarity protection. Consumption is max 4 W, so the load on the battery is small. There is only one power input and no 24 V or 48 V option, so feed it through its own DC breaker and confirm with us before ordering if your station battery voltage is near the limits during charging.
What power connector does the ZJTS832 have, and do I need to confirm it before ordering?
Yes, please confirm the power connector with us before ordering. For Zhongxin Shutong products the power input type and connector can differ between versions and batches, so tell us your supply (AC or DC and the voltage), how you will wire it in the cabinet and your country's plug standard, and we confirm the exact connector and supply version of the ZJTS832 for your order.
Ordering questions — samples, shipping, payment, lead time and genuine stock — are answered once on our FAQ page.
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