Modbus TCP/IP to Modbus Serial Communication Module
PLX31-MBTCP-MBS
ProSoft Technology’s Modbus® TCP/IP to Modbus® Serial communication gateway allows high-speed bi-directional data transfers between Modbus® TCP/IP-enabled PACs and Modbus® Serial devices. Modbus® Serial devices are widely used in nearly every industry and include SCADA systems and Power Monitors.
In addition, the gateway has several features that allow simplified integration, reduced commissioning time and optimized performance.
- Architectures
- Features and Benefits
- Specifications
- Hardware
- Downloads
- Protocols
- Videos
- Certifications
Architectures
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Features and Benefits
- Supports up to 20 simultaneous client & server connections, allowing for faster communication between devices such as HMIs, SCADA systems, power monitors and flow computers, among others.
- Includes a SD card slot (SD card optional) for storing configuration files. This can be used for disaster recovery.
- ProSoft Discovery Service: This utility allows your PC to see the gateway and change its default IP address without being on the same subnet.
- Secure module configuration via module switch (v1.04 and greater).
- Up to 4000 16-bit registers can be used to exchange large amounts of data.
Specifications
Modbus® TCP/IP Specifications
| Specification | Description |
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| Supported Modbus Function Codes | 1: Read Coil Status 2: Read Input Status 3: Read Holding Registers 4: Read Input Registers 5: Force (Write) Single Coil 6: Preset (Write) Single Holding Register | 15: Force (Write) Multiple Coils 16: Preset (Write) Multiple Holding Registers 22: Mask Write Holding Register (Slave Only) 23: Read/Write Holding Registers (Slave Only) |
| Supported Clients | 10 |
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| Supported Servers | MBAP: 5 Encapsulated: 5 |
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| Command List | Up to 160 fully configurable Client commands |
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| Status Data | Error codes reported individually for each command |
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| Command List Polling | Each command can be individually enabled or disabled; write-only-on-data-change is available |
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Modbus Serial Specifications
| Specification | Description |
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| Command List | Up to 100 commands per Master port, each fully configurable for Function Code, slave address, register to/from addressing and word/bit count. |
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| Supported Modbus Function Codes | 1: Read Coil Status 2: Read Input Status 3: Read Holding Registers 4: Read Input Registers 5: Force (Write) Single Coil 6: Preset (Write) Single Holding Register | 15: Force (Write) Multiple Coils 16: Preset (Write) Multiple Holding Registers 22: Mask Write Holding Register (Slave Only) 23: Read/Write Holding Registers (Slave Only) |
| Software configurable communication parameters | Baud rate: 110 baud to 115.2 kbps Parity: None, Even, Odd Data Size: 7 or 8 bits Stop bits: 1 or 2 RTS on/off delay: 0 to 65535 milliseconds Modbus RTU mode (binary) with CRC-16 Modbus ASCII mode with LRC error checking Floating Point Data Floating point data movement supported, including configurable support for Enron and Daniel implementations |
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| Polling of Command List | Configurable polling of command list, including continuous and on change of data, and dynamically user or automatic enabled. |
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| Status Data | Error codes available on an individual command basis. In addition, a slave status list is maintained |
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| Node Address | 1 to 247 (software selectable) |
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| RS Interface | RS232, RS422, and RS485 |
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| Transmit and Receive Buffer Size | 255 byte Transmit character length with 0 to 65535 millisecond delay between each transmitted character |
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Hardware
| Specification | Description |
| Power Supply | 24 VDC nominal 10 to 36 VDC allowed Positive, Negative, GND Terminals |
| Current Load | 24 VDC nominal @ 300 mA 10 to 36 VDC @ 610 mA maximum |
| Operating Temperature | -25°C to 70°C (-13°F to 158°F) |
| Storage Temperature | -40°C to 80°C (-40°F to 176°F) |
| Shock | IEC 60068-2-27; 15G @ 11ms, 3-Axis (Operational) IEC 60068-2-27; 30G @ 18ms, 3-Axis (Non-Operational) |
| Vibration | IEC 60068-2-6; 5G @ 10 to 150 Hz |
| Relative Humidity | 5% to 95% RH with no condensation |
| Dimensions (H x W x D) | 5.38 x 1.99 x 4.38 in 13.67 x 5.05 x 11.13 cm |
| LED Indicators | Configuration (CFG), Error (ERR), Power (PWR), Hardware Fault (FLT), Network Status (NS), EtherNet/IP™ Class I or Class III Connection Status (EtherNet/IP Only) Module Status (MS), Module Configuration Status (EtherNet/IP Only) Ethernet Communication Port Link/Activity, and 100 mbit Serial Communication Port Receive (RX) and Transmit (TX) |
| Ethernet Port | 10/100Mbit half-duplex RJ45 Connector Electrical Isolation 1500 Vrms at 50 to 60 Hz for 60 seconds, applied as specified in section 5.3.2 of IEC 60950: 1991 Ethernet Broadcast Storm Resiliency is less than or equal to 5000 [ARP] frames-per-second and less than or equal to 5 minutes duration |
| Number of Serial Ports | 1 |
| Serial Port Isolation | 2500 Vrms port signal isolation per UL 1577 serial port communication signal uses RF (Radio Frequency) modulation signal as isolation media, IC chip model is SiliconLabs Si844x (Si8440,Si8441,Si8442) |
| Shipped With Each Unit | 2.5 mm screwdriver J180 Power Connector (1) RJ45-DB9M Serial Adapter Cable (serial protocol) (1) DB9 to Screw Terminal Adapter (serial protocol) |
Protocols
MBS Protocol Specifications
MBS Protocol Specifications
Protocol Specifications
Modbus Master
A port configured as a virtual Modbus Master actively issues Modbus commands to other nodes on the Modbus network. The Master ports have an optimized polling characteristic that polls slaves with communication problems less frequently.
| Command List | Up to 100 commands per Master port, each fully configurable for function, slave address, register to/from addressing and word/bit count. |
| Polling of Command List | Configurable polling of command list, including continuous and on change of data, and dynamically user or automatic enabled. |
| Status Data | Error codes available on an individual command basis. In addition, a slave status list is maintained per active Modbus Master port. |
Modbus Slave
A port configured as a Modbus slave permits a remote Master to interact with all data contained in the module. This data can be derived from other Modbus slave devices on the network, through a Master port, or from the module.
| Node Address | 1 to 247 (software selectable) |
| Status Data | Error codes, counters and port status available per configured slave port |
PLX30-MBTCP Protocol Secifications
Protocol Specifications
EtherNet/IP® Specifications
| Number of Class 3 Server Connections | 5 |
| Supported PLC Types | PLC2, PLC5, SLC, ControlLogix |
| Supported Message Types | PCCC and CIP |
| Number of Class 3 Client Connections |
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Connected |
2 |
| Number of Class 1 I/O Connections |
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| PLX-31-EIP-MBTCP | 2 |
| I/O connection sizes | 248/248 |
| Max RPI time | 5ms per connection |
| CIP Services Supported |
0x4C - CIP Data Table Read |
| Command List | Support for 100 commands per Client, each configurable for command type, IP address, register to/from addressing and word/bit count. |
| Command Sets |
PLC-2/PLC-3/PLC5 Basic Command Set |
Modbus TCP/IP Specifications
Modbus Serial Specifications
| Command List | Up to 100 commands per Master port, each fully configurable for Function Code, slave address, register to/from addressing and word/bit count. |
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| Supported Modbus Function Codes |
1: Read Coil Status |
15: Force (Write) Multiple Coils |
| Software configurable communication parameters |
Baud rate: 110 baud to 115.2 kbps Parity: None, Even, Odd Data Size: 7 or 8 bits Stop bits: 1 or 2 RTS on/off delay: 0 to 65535 milliseconds |
|
| Polling of Command List | Configurable polling of command list, including continuous and on change of data, and dynamically user or automatic enabled. |
|
| Status Data | Error codes available on an individual command basis. In addition, a slave status list is maintained per active Modbus Master port. |
|
| Node Address | 1 to 247 (software selectable) |
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| RS Interface | RS232, RS422, and RS485 |
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Certifications
| Declaration of Conformity (ATEX) | 348.50 kB | Last Modified 10/28/2019 |
| CB Safety | 327.80 kB | Last Modified 03/31/2020 |
| Korean KC Registration | 548.37 kB | Last Modified 03/13/2020 |
| UL/cUL; Class 1, Div 2 | 233.35 kB | Last Modified 04/08/2019 |
| Declaration of Conformity (RoHS/CE) | 297.32 kB | Last Modified 07/25/2018 |