Communication Module | Yokogawa CM1*A
The Yokogawa CM1*A, also cataloged as the CM1 Communication Module, operates as a dedicated hardware component for central data routing and protocol translation within CENTUM VP control platforms.
Suffix Breakdown & Model Matrix
- CM1*A
- CM1: Base Communication Module Series
- *A: Hardware revision code and interface card option
Hardware Specifications
| Parameter | Specification |
|---|---|
| Model | CM1*A |
| Brand | Yokogawa |
| Origin | Unspecified |
| Weight | 0.45 kg |
| Dimensions | 120 mm x 80 mm x 35 mm |
| Operating Temp | 0 deg C to 55 deg C |
| Storage Temp | -20 deg C to 70 deg C |
| Power Consumption | 24 VDC typical |
| Supported Systems | CENTUM VP, CENTUM CS 3000 |
| Communication Protocols | OPC, Modbus RTU/TCP, Ethernet/IP |
| Functions | Data routing, message buffering, procedure execution |
| Redundancy Support | Hot standby, failover support |
4-20 mA HART Loop Protocol and Channel Isolation
The module incorporates channel-to-channel isolation architecture to mitigate common-mode noise and prevent ground loop interference across distributed process nodes. When interfacing with field networks or supervisory networks via OPC and Modbus TCP/RTU protocols, internal buffering mechanisms execute deterministic message queuing and hot-standby failover without interrupting signal integrity on active control loops.
Frequently Asked Questions
Q: Does the CM1*A support hot-standby failover without communication interruption?
A: Yes, the module incorporates redundant hardware failover mechanisms, allowing seamless transition to a backup module in hot-standby mode upon primary link loss.
Q: What are the input power supply requirements for the module internal bus?
A: The unit operates on a standard 24 VDC supply voltage to power internal processing circuitry and communication transceivers.
Q: Can the CM1*A module coexist with both CENTUM VP and CENTUM CS 3000 platforms?
A: Yes, the communication interface is fully compatible with both CENTUM VP and CENTUM CS 3000 system architectures for protocol execution and data routing.
Field Installation Guidelines
- Mount the module into the designated CENTUM nest slot, ensuring proper physical pin alignment before fully seating the board.
- Connect 24 VDC power wiring using properly rated conductors and maintain correct polarity during termination.
- Ensure all Ethernet and serial RS-485 Modbus cables are routed through grounded conduit separated from high-voltage AC lines to prevent EMI pickup.
- Verify cabinet ambient temperature remains within the specified 0 deg C to 55 deg C operational range with unblocked convection paths.
Communication Module | Yokogawa CM1*A
Communication Module | Yokogawa CM1*A
The Yokogawa CM1*A, also cataloged as the CM1 Communication Module, operates as a dedicated hardware component for central data routing and protocol translation within CENTUM VP control platforms.
Suffix Breakdown & Model Matrix
- CM1*A
- CM1: Base Communication Module Series
- *A: Hardware revision code and interface card option
Hardware Specifications
| Parameter | Specification |
|---|---|
| Model | CM1*A |
| Brand | Yokogawa |
| Origin | Unspecified |
| Weight | 0.45 kg |
| Dimensions | 120 mm x 80 mm x 35 mm |
| Operating Temp | 0 deg C to 55 deg C |
| Storage Temp | -20 deg C to 70 deg C |
| Power Consumption | 24 VDC typical |
| Supported Systems | CENTUM VP, CENTUM CS 3000 |
| Communication Protocols | OPC, Modbus RTU/TCP, Ethernet/IP |
| Functions | Data routing, message buffering, procedure execution |
| Redundancy Support | Hot standby, failover support |
4-20 mA HART Loop Protocol and Channel Isolation
The module incorporates channel-to-channel isolation architecture to mitigate common-mode noise and prevent ground loop interference across distributed process nodes. When interfacing with field networks or supervisory networks via OPC and Modbus TCP/RTU protocols, internal buffering mechanisms execute deterministic message queuing and hot-standby failover without interrupting signal integrity on active control loops.
Frequently Asked Questions
Q: Does the CM1*A support hot-standby failover without communication interruption?
A: Yes, the module incorporates redundant hardware failover mechanisms, allowing seamless transition to a backup module in hot-standby mode upon primary link loss.
Q: What are the input power supply requirements for the module internal bus?
A: The unit operates on a standard 24 VDC supply voltage to power internal processing circuitry and communication transceivers.
Q: Can the CM1*A module coexist with both CENTUM VP and CENTUM CS 3000 platforms?
A: Yes, the communication interface is fully compatible with both CENTUM VP and CENTUM CS 3000 system architectures for protocol execution and data routing.
Field Installation Guidelines
- Mount the module into the designated CENTUM nest slot, ensuring proper physical pin alignment before fully seating the board.
- Connect 24 VDC power wiring using properly rated conductors and maintain correct polarity during termination.
- Ensure all Ethernet and serial RS-485 Modbus cables are routed through grounded conduit separated from high-voltage AC lines to prevent EMI pickup.
- Verify cabinet ambient temperature remains within the specified 0 deg C to 55 deg C operational range with unblocked convection paths.
