Memory Assignments For Plc Link Communications - Omron FQ2-S/CH Series User Manual

Memory Assignments for PLC Link Communications

This section describes the assignments for the Command, Response, and Data Output Areas.
 Command Area
PLC (Master) to Sensor (Slave)
First Bits
word
15 14 13 12
+0 ERRCLR Resv Resv Resv Resv Resv Resv Resv Resv Resv Resv Resv Resv Resv Resv EXE Control sig-
+1 Resv Resv Resv Resv Resv Resv Resv Resv Resv Resv Resv Resv Resv Resv Resv DSA
+2
+3
+4
+5
+6
+7
+8
+9
Signal Signal name
EXE Control Command
Execution Bit
DSA Data Output Request
Bit
ERRCLR Clear Error
Command code Command code
Parameters 1 to 3 Command parameters These I/O ports store the command parameters.
 Response Area
Sensor (Slave) to PLC (Master)
FQ2-S/CH User's Manual
for Communications Settings
11 10 9 8 7
Command code
Parameter 1
Parameter 2
Parameter 3
Turn ON this signal from the PLC to send a control
command for the Sensor to execute.
Turn OFF the EXE signal from the PLC when the
Control Command Completed (FLG) signal from
the Sensor turns ON. (Set the control command
code and parameters before you turn ON this sig-
nal.)
Turn ON this signal from the PLC to request data
output. When this signal turns ON, the Sensor out-
puts data.
Turn OFF the DSA signal from the PLC when the
Data Output Completed (GATE) signal from the
Sensor turns ON.
Turn ON this signal to turn OFF the error (ERR)
signal from the Sensor.
Turn OFF this signal from PLC when the error
(ERR) signal goes OFF.
This I/O port stores the command code.
Controlling Operation and Outputting Data with PLC Link Communications
6 5 4 3 2
Function
Contents
1 0
nals (32
bits)
Command
code (32
bits)
Parameter
(integer)
Spare (inte-
ger)
Spare (inte-
ger)
Application
Command/
response commu-
nications
Data output after
measurements
Command/
Response Commu-
nications
Command/
Response Commu-
nications
133