Honeywell 700 User Manual page 17

Register Name
40084 ERRORCODE
40085 BAUD
40086 PARITY
40087 ADDRESS
40089 PROTOCOL
ADDRESS
ADDRESS
NOTES: A CONVERTER MAY BE NECESSARY FOR COMMUNICATION WITH THE MODBUS MASTER CONTROL.
NOTE: Refer to Fig. 9 for converter to RJ11 wiring details.
HONEYWELL MODEL 700/800 SIGNAL PROCESSOR AND VIEWING HEAD
Table 4. MODBUS registers map. (Continued)
Error code (read/write)
NOTE: writing a non zero number to this register is not allowed
Baud rate setting (bits/second). Only affects RS-485
communication, not IRDA. (read, write)
96=9600 (default), 192=19200.
The SP and the master device must have the same baud
settings.
Parity setting. Only affects RS-485 communication, not IRDA.
(read/write)
0= none (default), 1=odd
Modbus address used by RS-485 and IRDA (read/write).
Each device must have a unique address.
Protocol (read/write)
0=Honeywell protocol, 1=Modbus protocol
1
BOILER
BNR 1 BNR 2
11 12
BNR 1 BNR 2
31 32
BOILER 3
MODBUS
MASTER CONTROL
USE SHIELDED CABLE FOR COMMUNICATION WIRING.
DRAWING IS FOR GENERAL REFERENCE ONLY.
FOR RS422 COMMUNICATION WITH THE 700ACSP OR 700DCSP, AN RJ11 CONNECTOR WITH 5 WIRES
FROM EACH SIGNAL PROCESSOR WILL BE REQUIRED (RDA-, RDB+, TDA-, TDB+, GND), FOLLOWING
POLARITY FROM EACH SIGNAL PROCESSOR.
Fig. 8. Typical Communication Wiring and Recommended Addressing.
Description
BNR 3 BNR 4
13 14
BNR 3 BNR 4
33 34
17
Minimum
- -
96 192
0 1
0 247
0 1
BNR 5 BNR 6
15 16
M34457
Maximum
66-2069EP—04