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COMMREQ #19: Read Identification
To read the identification data from a Genius device and place it in PLC CPU memory, use the Read
Identification command. This causes the Gateway to issue a Read Identification datagram. When the data is
received from the target Genius device, via a Read Identification Reply Datagram, it will automatically be
placed in the CPU memory location specified in the Command Block.
Command Block for the Read Identification Command
Address
Command Length
Address +1
No Wait
Address +2
Status Block memory type
Address +3
Status Block offset
Address +4
Idle timeout value
Address +5
Max. communications time
Address +6
Command number
Address +7
PROFINET Device number
Address +8
Genius Device Number
Deposit Memory length.
Address +9
(either bits or words)
Address +10
Deposit Memory type
Memory offset
Address +11
Address +12
GFK-2892F
Chapter 6. COMMREQ/Data_Init_Comm Programming
7
0
70 (%I), 72 (%Q), 8 (%R), 10 (%AI), 12 (%AQ) or 196 (%W)
Beginning address for the COMMREQ Status Block.
0
0
19
1-255: The device number of the targeted GCG Genius Gateway.
0-31: the SBA of the targeted Genius Device.
This entry tells the CPU how much memory is being allocated to store the
identification data returned by the Genius device.
Enter 6 for word memory types or 96 for bit memory types (depends on
the memory type selected as the Deposit Memory type below).
Enter the code representing the CPU Memory Type where the GCG will
deposit the data obtained from the target Genius Device. Use the same
codes as in Address+2.
bytes 1, 2
Starting address within the Deposit Memory type.
bytes 3, 4
(Byte 4 is MSB, Byte 1 is LSB)
March 2019
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