Johnson Controls York YHAU-C User Manual

The following table contains information about the communication specifications required by the
Modbus/RTU.
Table 20: Communication specification - Modbus/RTU
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
For more information about the Read Command, see Table 16. For more information about the
Write Command, see Table 17.
YHAU-C Single Effect Steam-Fired Absorption Chiller96

Johnson Controls York YHAU-C Specifications

General

Brand	Johnson Controls
Model	York YHAU-C
Category	Chiller
Language	English