Modbus Configuration Examples - Honeywell Touchpoint Pro Technical Handbook

6.9 Modbus Configuration Examples

The Modbus interface consists of two independent Modbus ports. The RS485 connections are located on terminals TB6 and
TB7 of the Control Module. For convenience, IN and OUT terminals are provided which are connected together internally.
The diagrams on the next page show example configurations of which the second and third offer redundancy.
Modbus Master
(120 Ω Jumper pins
shorted)
Slave
Node
Note: TPPR can fill any of the slave nodes but cannot have same slave IDs in daisy chain or multi-drop configuration.
Note: if a different resistance is required, leave the Modbus Master 120 Ω Jumper pins un-shorted and connect the resistor
directly between TB6 and / or TB7 terminals 3 and 4 (A OUT and B OUT).
Part. No. 2400M2501_6
MODBUS INSTALLATION
Host
Modbus
Master
Host
Modbus
Master
Slave
Node
Slave
Node
Modbus Master
(120 Ω Jumper pins
unshorted)
Slave
Node
Figure 68. Six Modbus Configuration Options
Slave
Node
Slave
Node
54
Slave
Node
Slave
Node
Slave
Node
Slave
Node
Technical Handbook
Host
Modbus
Master
Host
Modbus
Master
Host
Modbus
Master
Touchpoint Pro