JOHNSON CONTROLS
91
SECTION 4 - TECHNICAL DATA
FORM 155.31-ICOM2.EN.UL
ISSUE DATE: 12/21/2018
4
The following table contains information about the
communication specifications needed for the Modbus
for more information
about the Read Command or
for
more information about the Write Command.
TABLE 22 -
COMMUNICATION SPECIFICATIONS
Communication Protocol
Modbus/RTU
Communication Path Type
RS422/RS485 Data Length: 8 Bit Stop Bit: 1 Bit Parity: EVEN Speed: 9600 bps
Connector
D-Sub 9pin
Function Code
Read Coil Status:01 Read Holding Register:03
Device
Digital Signal: Coil Analog Signal: Holding Register
Slave Equipment Address
1
