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Read Controller Attributes Section 7-5
7-5 Read Controller Attributes
This service reads the model number and communications buffer size.
■ Service Request PDU
■ Service Response PDU
(1) Model
The first 10 bytes of ASCII data from the Read Controller Information com-
mand are returned. A specifications code follows the model number.
The following table shows the model number format.
(2) Buffer Size
The communications buffer size is expressed in 2-byte hexadecimal and is
converted to 4-byte ASCII before being displayed.
0040 (Indicates 64 bytes.)
(3) Response Code
MRC SRC
0 5 0 3
2 2
MRC SRC
0 5 0 3
2 2 4 10 4
Response Code Model
Buffer Size
Model Code (4 bytes)
Same in all models S8M-
Input voltage Code (1 byte)
5 V 0
12 V 1
24 V 2
Number of branch outputs Code (1 byte)
11
22
33
44
Communications specification Code (1 byte)
RS-232C 0
NEWS 1 (fixed)
UL Class 2 output Code (1 byte)
No 0
Ye s 1
Reserved 1 Code (1 byte)
--- 0
Reserved 2 Code (1 byte)
--- 0
Response
code
Error name Cause Error priority
1001 Command too long The command is too long. 1
0000 Normal completion No error 0