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Example: Alarm Acknowledge (Command Type):
Block Active
Register
(41n01)
Value
If 'Block Active' is set to 1, the Controller processes the request, but if 'Block Active' is set to 0 the Controller will not
process the request or has already processed the request.
4.7.1
Modbus RTU Command Poll Registers
The sole option for Channel Type is 105 – Input Channel.
Note: Function 06/16 cannot be used for SIL channels.
Command
Block Active
Poll Block
1
2
3
4
5
6
7
8
9
10
Allowed values for the Result register 41n05 (n = 0 to 9):
MAN0995_Iss 1_01/16
Pt. No. 3011M5027_1
M
ODBUS
Channel
Channel ID
Type (41n02)
1
105
Table 13.
Channel Type
41001
41002
41101
41102
41201
41202
41301
41302
41401
41402
41501
41502
41601
41602
41701
41702
41801
41802
41901
41902
Table 14.
Modbus RTU Command Poll Registers
Value
0
Success
1
Command not permitted
2
Inter process communication failure
67
Failure
Table 15.
Modbus RTU Command Poll Register Values
C
ONFIGURATION
Command
(41n03)
Type (41n04)
2
23
Command Type Example
Command
Channel ID
Type
41003
41004
41103
41104
41203
41204
41303
41304
41403
41404
41503
41504
41603
41604
41703
41704
41803
41804
41903
41904
Meaning
15
Command
Result (41n06)
Data (41n05)
(Updated upon
0
request execution)
Command
Result
Data
41005
41105
41205
41305
41405
41505
41605
41705
41805
41905
Modbus Installation Guide
41006
41106
41206
41306
41406
41506
41606
41706
41806
41906
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