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I/O Allocation
4-2
4.1 Input/Output Signals Used for Communication
4.1.1 I/O Allocation of CPU Unit
Input signal
Input
signal
Communication
port
Name
Description
Effective
operation
mode
X0
For COM.1 Port
X1
For COM.2 Port
X2
For COM.0 Port
General-
purpose
communication
Reception
done flag
When the unit completes the data reception,
it turns on (1).
Waiting for data reception: 0, Reception
completed: 1
General-
purpose
communication
X3
-
Not used
Do not use this.
X4
For COM.1 Port
X5
For COM.2 Port
X6
For COM.0 Port
General-
purpose
communication
Reception
done (copy)
flag
It turns on (1) if there are copied data when
GPRECV instruction is executed. It turns off
(0) when END instruction is executed.
(Note 1)
Reading completed: 1
No data to be read: 0
General-
purpose
communication
X7
-
Not used
Do not use this.
X8
For COM.1 Port
X9
For COM.2 Port
XA
For COM.0 Port
General-
purpose
communication
Clear to send
flag
It turns on (1) when the unit is set to the
general-purpose communication mode. It
turns off (0) in other modes.
General-
purpose
communication
XB
-
Not used
Do not use this.
XC
For COM.1 Port
XD
For COM.2 Port
XE
For COM.0 Port
Master
communication
Clear to send
flag
It turns on (1) when the unit is set to modes
other than the PLC link mode or general-
purpose communication mode. It turns off (0)
in other modes.
MEWTOCOL
MODBUS-RTU
XF
-
Not used
Do not use this.
X10
For COM.1 Port
X11
For COM.2 Port
X12
For COM.0 Port
Reset done
When the communication channel is reset
under the output Y10 - Y12, the flag is
turned on (1) once the resetting operation is
completed.
Resetting done: 1
Y10 - Y12 is off: 0
General-
purpose
communication
X13
-
Not used
Do not use this.
X14
For COM.1 Port
CTS signal
monitor
Status of the CTS signal sent from the
device communicating with.
Clear to send from COM.1 port = 0
Cannot send from COM.1 port = 1
The RTS signal can be controlled with Y14.
When RS/CS is
set to valid in
Communication
Block COM.1.
X15
- X1F
-
Not used
Do not use this.
(Note 1) The general-purpose communication reception done (copy) flag is effective after the execution of the RECV
instruction until one of the following instructions is executed. This flag does not remain ON across several scans.
Execute 1: END instruction (scan header), and 2: RECV instruction
Phone: 800.894.0412 - Fax: 888.723.4773 - Web: www.clrwtr.com - Email: [email protected]
Summary of Contents for AFP7CCM1
Page 1: ...Phone 800 894 0412 Fax 888 723 4773 Web www clrwtr com Email info clrwtr com ...
Page 45: ...3 I O Allocation Phone 800 894 0412 Fax 888 723 4773 Web www clrwtr com Email info clrwtr com ...
Page 57: ...6 PLC Link Phone 800 894 0412 Fax 888 723 4773 Web www clrwtr com Email info clrwtr com ...