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VARIO BK ETH
4.3.3
Task:
"Read_Value" Service
This service can be used to read INTERBUS system parameters
(variables).
For a list of defined system parameters (variables), please refer to the
description of the "Set_Value" service (Table 4-2 on page 4-10).
Syntax:
Read_Value_Request
Word 1
Code
Word 2
Parameter_Count
Word 3
Variable_Count
Word 4
Variable_ID
Bit
Key:
4-12
0351hex
1st parameter
15 ................................................................................. 0
Code:
0351hex
Command code of the service request
Parameter_Count:
Number of subsequent words, 0x002
Variable_Count:
Number of system parameters to be read,
0x0001
Variable_ID:
ID of the system parameter to be read, 0x2240
0x2275
9499-040-69311