Commreq #19: Read Identification - Emerson PACSystems RX3i User Manual

User manual
GFK-2892G
Address +15
Address +16
Address +17
Address +18
Address +19
Address +20
to Address +n
6.4.12

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
Address +1
Address +2
Address +3
Address +4
Address +5
Address +6
Address +7
Address +8
Address +9
COMMREQ/Data_Init_Comm Programming
Block name,
characters 1, 2
characters 3, 4
characters 5, 6
characters 7, 8
Target Data length,
(in words, bytes, or bits).
Data
Command Length
No Wait
Status Block memory type
Status Block offset
Idle timeout value
Max. communications time
Command number
PROFINET Device number
Genius Device Number
Deposit Memory length.
(either bits or words)
Required to write to %L memory in a PLC,
otherwise zero.
For %P, Address+15 through Address +18 are
ignored.
Block names are limited to 7 characters. Character
8 and all other trailing characters MUST be entered
as nulls (00h).
This is the amount of data to be written to the
targeted device. When reading a PLC, data length
is defined in bits or words, depending on the
memory type being written. For other types of
devices, the length entered here is as expected by
the target device.
The maximum length is equal to 128 bytes.
Data to be transmitted, then written into the
specified memory of the target device.
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).
Chapter 6
Sep 2019
77