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Chapter 6. COMMREQ/Data_Init_Comm Programming
COMMREQ #22: Read Map Command
To read the I/O mapping configuration from a 90-70 Remote Scanner, use the Read Map Command. When the
data is received, it will automatically be placed in the CPU memory location specified in the Command Block.
Command Block for the Read Map 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
Read Map Returned Data
Byte #
Description
0
Remote Rack ID
1-2
%I Starting Reference
3
Length of %I data (bytes)
4-5
%AI Starting Reference
6
Length of %AI data (bytes)
7-8
%Q Starting Reference
9
Length of %Q data (bytes)
10-11
%AQ Starting Reference
12
Length of %AQ data (bytes)
13
8-bit additive checksum
14-15
16-bit LRC checksum
80
7
0
70 (%I), 72 (%Q), 8 (%R), 10 (%AI), 12 (%AQ) or 196 (%W)
Beginning address for the COMMREQ Status Block.
0
0
22
1-255: The device number of the targeted GCG Genius Gateway.
1-29: the SBA of the targeted Genius Device.
This entry tells the CPU how much memory is being allocated to store the
data returned by the Genius device. Value specified in bits or words,
depending on memory type selected below.
(8 words or 128 bits)
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)
PACSystems RX3i Genius Communications Gateway
GFK-2892F
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