Omron NE1A Series - Page 246

247
Appendix A
A-3-2 Explicit Messages: NE1A-SCPU02
Reading General Status: NE1A-SCPU02
Reading I/O Area: NE1A-SCPU02
Explicit
message
Service Function Command Response
Service
code
Class
ID
In-
stance
ID
At-
tribute
ID
Data size
Read Unit General
Status
Read Reads the Unit’s general
status.
0E hex 39 hex 01 hex
6E hex --- 1 byte
Explicit
message
Service Function Command Response
Service
code
Class
ID
In-
stance
ID
At-
tribute
ID
Data size
Read I/O Area Read Reads the Unit’s I/O data.
Instance ID Specification
Range:
Local input = 01
Local output/test output = 02
Safety input = 05
Safety output = 06
Address Specification Range:
Local input: 0 to 4
Local output/test output: 0 or 1
Safety input: 0 to 511
Safety output: 0 to 511
4B hex 306
hex
01, 02,
05, and
06 hex
--- First and second
byte offset
address:
0000 to 01FF
hex (0 to 511),
Third and fourth
byte read size:
0001 to 0100
hex (1 to 256)
Read data