Omron CJ - INSTRUCTIONS Reference Manual page 1004

3. Instructions
Example Programming
In this example, EGATR(721) is used to read the general status of a DRT2 Slave (I/O Terminal).
Communications Port
Enabled Flag (Port 6)
A202.06
0.00
Explicit message command format
0E 95
Service Code
Destination node address
CS1W-DRM21 DeviceNet Unit
(CPU Bus Unit with unit number 2)
CPU
Unit
Unit address 12 hex (because
the unit number is 2)
Explicit
message
S: D0 0
S+1: D1 0
S+2: D2 0
S+3: D3 0
C: D200 0
C+1: D201 8
C+2: D202 0
C+3: D203 0
D: D100 0
D+1: D101 0
7
D101
0
966
When CIO 0.00 and A202.06 (the Communications Port
Enabled Flag for port 06) are ON, EGATR(721) reads the
general status of the DRT2 Slave (I/O Terminal). In this case,
@EGATR
the Total ON Time or Number of Contact Operations for input
D0
S
3 are read.
D100
D
D200
C
Service Code = 0E hex, Class ID = 95 hex, Instance ID = 01
hex, and Attribute ID = 65 hex.
The general status is returned in 1 byte.
01 65
Attribute ID
Instance ID
Class ID
EGATR(721)
instruction
Slave (I/O Terminal)
with node address 10
0 0 A
Slave's node address = 10 = 0A hex
0 9 5 Class ID = 95 hex
Instance ID = 01 hex
0 0 1
Attribute ID = 65 hex
0 6 5
0 0 2 Set 2 words = 0002 hex since there are 2 words in D to D+1.
Byte order = 8 hex (from rightmost byte), communications port = 6 hex (port 6),
6 1 2
and the DeviceNet Unit's unit address = 12 hex
Response monitoring time = 0000 hex (2 s)
0 0 0
Explicit format type = 0000 hex (DeviceNet format)
0 0 0
D contains 0 hex for the 1 byte of data returned to the rightmost byte of D+1.
0 0 1
The Slave's general status is returned to bits 00 to 07.
0 4 8
(The data is stored in bits 00 to 07 because the byte order setting in C+1 bits
12 to 15 was set to 8 hex (from rightmost byte).
6 5 4 3 2 1 0
1 0 0 1 0 0 0
Basic Unit's I/O Power Status Flag
Expansion Unit's I/O Power Status Flag
Low Network Power Voltage Flag
Unit Maintenance Flag
Sensor Disconnected Flag
Sensor Power Shorted Flag
Operation Time Over Flag
Connected Device Maintenance Flag
General
status
CS/CJ/NSJ Series Instructions Reference Manual (W474)