Super Systems AC20 RS485 Modbus User Manual
Page 31

Page 31/59
TITLE: MODBUS/J-BUS Protocol for SSi’s- AC20 ENG. 824E REV. 1
BITS FOR DEVICE IN CONTROL MODE
ADDRESS
(decimal)
Display
R
W
R
JBus
Mod
Bus
DESCRIPTION
MNEM
CODE
E
A
D
I
T
E
201
200
Logic level of external contact Dig1
Range:
0 = Logic level 0
1 = Logic level 1
x
202
201
Logic level of external contact Dig2
Range:
0 = Logic level 0
1 = Logic level 1
x
203
202
Logic level of external contact Dig3
Range:
0 = Logic level 0
1 = Logic level 1
x
205
204
Status relay alarm 1
Range:
0 = Off
1 = On
x
206
205
Status relay alarm 2
Range:
0 = Off
1 = On
x
207
206
Status relay alarm 3
Range:
0 = Off
1 = On
x
211
210
Unsolicited request flag general
Range:
0 = No Parameters change is occurred
1 = Parameters change is occurred
Note:
The bit is set also to signal the start up.
Changes produced by serial link will not be
flaged
The bit resets after reading
x
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