Siemens Milltronics BW500 Operating Instructions Manual page 144

Communications
11.5 Modbus RTU/ASCII Protocol
Device State (41,020 – 41,020)
The Device State word is used to feed back the current operating state of the product. Each bit
gives the state of different parts of the product, some mutually exclusive, others are not. The
state should be checked to verify any device commands.
Bit #
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
Not available with BW500/L.
a)
142
Description Bit Clear
PID 1 Mode Manual
a)
PID 1 Freeze No
a)
PID 1 Setpoint Source Local
a)
PID 2 Mode Manual
a)
PID 2 Freeze No
a)
PID 2 Setpoint Source Local
a)
Zero No
Span No
- -
- -
- -
- -
Write Privileges No
System Configured Not Configured
Mode Calibration Mode
Totalizing Not Totalizing
Bit Set (1)
Auto
Yes
Remote
Auto
Yes
Remote
In progress
In progress
-
-
-
-
Yes
Yes
RUN Mode
Totalizing
BW500 and BW500/L
Operating Instructions, 12/2016, A5E33482052-AD