3: Legacy Modbus Clss Gateway Mainboard; Replacing The Modbus Clss Gateway Mainboard (Modbus-Gw); Using Both The Cgw-Mb And The Modbus Clss Gateway Mainboard - Honeywell CGW-MB Installation And User Manual

NFN Network
7.7.3 Legacy Modbus CLSS Gateway mainboard
A panel's network might already be using a Modbus CLSS Gateway mainboard in its
network. You can add the CGW-MB to the network or replace the legacy Modbus CLSS
Gateway mainboard with the CGW-MB.

Replacing the Modbus CLSS Gateway mainboard (Modbus-GW)

Following changes occur when the CGW-MB replaces the Modbus CLSS Gateway
mainboard in the network.
NOTE: To know the Modbus CLSS Gateway mainboard values of the following, refer to the
document: LS10015-000NF-E Rev. C2.
The Mapping of Registers

The CGW-MB and the Modbus CLSS Gateway mainboard have different mapping of
registers.
Example:
The register range for loop-1 detectors:
In the Modbus CLSS Gateway mainboard: 40001 to 40200
In the CGW-MB: 40001 to 40300
Change the client-side scripting as required to change to the registry mapping of the
CGW-MB.
For register mapping details for the CGW-MB, refer to the
Device Types

The device types are different for these two CLSS Gateway mainboards.
Example:
Device Type value of Heat detector:
In the Modbus CLSS Gateway mainboard: 1
In the CGW-MB: 0100H
For device type details for the CGW-MB, refer to the
System Troubles

There are new troubles in the CGW-MB, and some of the system trouble names are
different.
Example 1: New Troubles
In the CGW-MB: 460016-12
Example 2: Different trouble name
In the Modbus CLSS Gateway mainboard: The General PS Fault and the Power Supply
Trouble are two different events.
In the CGW-MB: The 460015 - 8
For system trouble details for the CGW-MB, refer to the
Register Map"

Using Both the CGW-MB and the Modbus CLSS Gateway mainboard

Ensure the following:
• The Node Number of the CGW-MB should be different from other CLSS Gateway
mainboards in the network.
• The IP address of the CGW-MB should be different from other CLSS Gateway
mainboards and devices in the network.
NOTE: The changes described in the
(Modbus-GW)"
CGW-MB Installation and Users' Manual | P/N:LS10248-000HW-E | REV.G | JUL/31/2022
th
bit is Workstation Failure.
th
.
section are applicable for this setup also.
7.30 "Device Types"
bit is one single event for these two.
"Replacing the Modbus CLSS Gateway mainboard
Modbus Communications
7.21 "Register Mapping"
section.
Table 7.41, "System Troubles
section.
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