AERCO SWDW68 U-Tube Double-Wall Heaters w/ECS - Manual (Page 93)

HE-
111 − APPENDIX A
Rev B Mar 2013 A-7
A.2 MODBUS COMMUNICATION INFORMATION
NOTE
The Eurotherm 2400 Controller supports the MODBUS RTU mode of
transmission. The default settings are as follows: 9600 Baud Rate, one
start bit, eight data bits, one stop bit and no parity bit.
Table A-1. Eurotherm Series 2400 Controller MODBUS Points
MODBUS
Data
Address
Menu
Item
Menu Item
Description
Units &
Range Default/Comments
Register
Type
Ref. 1
Comm.
Guide
5 w.SP Setpoint 40-205°F 140°F, Address to read value Read
Only 5-4
24 SP 1 Setpoint 40-180°F 140°F, Address to change value Write 5-11
1 Top
Value Outlet Temp 40-205°F Same value as front display Read
Only 5-3
133 LoGH Peak Temp 40-205°F Resets on Power Loss Read
Only 5-15
135 LoGA Average
Temp 40-205°F Resets on Power Loss Read
Only 5-15
134 LoGL Low Temp 40-205°F Resets on Power Loss Read
Only 5-15
13 (set)
74 (status,
0 = safe
1 = alarm)
AL 1 Over Temp
Alarm 40-205°F 20°F above setpoint; Alarm Type
17: Deviation High Read
Only 5-7
5-20
14 (set)
74 (status,
0 = safe
1= alarm)
AL 2
(FSH)
Full Scale
High Alarm 205°F 205 ° F
Alarm Type 2: Full Scale High
Read
Only 5-7
5-20
258 Sbr Feedback
Sensor
Break Status:
0: Good
1: Failed
Denotes Feedback Sensor
Failure/Open Circuit Read
Only 5-18
289 Li 1 Feedback
Sensor Temp 40-180°F Sensor input to controller, same
as display temp. Read
Only 5-14
290 Li 2 Flow GPM Read
Only 5-14
3 OP Control
Output
Signal % Correlates to valve position Read
Only 5-4
131 Addr Communicati
on Address Integer
(0-63) Default – 1. Temperature
Controller communication
address Read
Only 5-14
REFERENCE DOCUMENTS
1. Eurotherm 2000 Series Communications Handbook, # HA026230
2. Eurotherm 2404/2408 Control Setpoint Programmer Installation and Operation Handbook,
# HA025132