Communication Cassettes; Communication Status Leds; Fpg-Com1: 1-Channel Rs232C Type - Panasonic FPS Series User Manual

FPΣ User's Manual

8.2 Communication Cassettes

There are several types of communication cassettes, each having a particular field of
application (see page 163):
Types
• FPG-COM1: 1-channel RS232C type (see page 159)
•
FPG-COM2: 2-channel RS232C type (see page 160)
•
FPG-COM3: 1-channel RS485 type (see page 160)
•
FPG-COM4: 1-channel RS485 and 1-channel RS232C combination type (see page
161).

8.2.1 Communication status LEDs

The labeling of the communication status LEDs on the CPU refers to the 2-channel RS232C
type communication cassette (FPG-COM2). For all other types, the following table applies:
LED FPG-COM1
COM1
S SD
R RD
COM2
S RS
R CS
SD: Send Data (output)
RD: Receive Data (input)
The LED flashes while communication is taking place and goes out when there is no
communication.

8.2.2 FPG-COM1: 1-Channel RS232C Type

This communication cassette is a 1-channel unit with a five-wire RS232C port. RS/CS control
is possible.
Terminal layout
RS (Request to Send) can be controlled by the SYS1 instruction.
Data cannot be sent unless the pin CS (Clear to Send) is on. When connecting to a three-wire
port, short-circuit the RS and CS pins.
FPG-COM2
SD
RD
SD
RD
RS: Request to Send
CS: Clear to Send
Pin Name
SD
Send Data
RD
Receive Data
RS
Request to Send
CS
Clear to Send
SG
Signal Ground
8.2 Communication Cassettes
FPG-COM3 FPG-COM4
SD RS485: SD
RD RS485: RD
— RS232C: SD
— RS232C: RD
Signal direction
PLC → External device
PLC ← External device
PLC → External device
PLC ← External device
—
Port
COM 1
159