Panasonic FP-M Hardware Manual page 129

When "PLC = COMM. ERR" is displayed on the NPST-GR screen
Check if the baud rate settings of the
FP-M and NPST-GR are the same.
Check the cable and RS232C interface
adapter.
Confirm the setting of the personal
computer referring to the manual for
your computer.
• NPST-GR baud rate setting
<If you are using MENU 1 screen type>
Open [NPST MENU] by pressing the
Esc key, then select "NPST
CONFIGURATION" to skip to the
[NPST CONFIGURATION]
subwindow. In the [NPST
CONFIGURATION] subwindow, select
"1. NPST CONFIGURATION".
In this window, you can find the baud rate as shown below:
TRNS RATE (bps) [19200 / 9600 / 4800 / 2400 / 1200 / 600 / 300 ]
Select a baud rate (19,200 or 9,600), press the F1 key and select "SAVE DISK ? YES"
to register this change onto the disk.
• FP-M baud rate setting
Set the baud rate using the baud rate
selector of the FP-M control board.
Note:
• Even when both the NPST-GR and FP-M are set to 19,200 bps, sometimes a
computer cannot communicate with the FP-M properly at 19,200 bps. If this happens,
change both of their settings to 9,600 bps and try again.
RS232C interface adapter: Needs to be customized to match your computer.
• Confirm the cable specifications, referring to the following examples:
RS232C interface adapter & IBM PC-AT (9 Pins)
Connected to
RS232C interface adapter
(25 pins male)
Pin No. Abbreviation Pin No.
1 FG
2 SD (TXD)
3 RD (RXD)
4 RS (RTS)
5 CS (CTS)
6 DR (DSR)
7 SG
8 CD (DCD)
20 ER (DTR)
<If you are using MENU 2 screen type>
Open [NPST FUNCTION MENU] by
pressing the Esc key, then select
"Z. NPST CONFIGURATION".
Baud rate selector
9,600 bps
19,200 bps
RS232C interface adapter & personal computer (25 Pins)
Connected to Connected to
IBM PC-AT RS232C interface adapter
(9 pins female) (25 pins male)
Abbreviation Pin No. Abbreviation
1 CD (DCD) 1
2 RD (RXD) 2 SD (TXD)
3 SD (TXD) 3 RD (RXD)
4 ER (DTR) 4 RS (RTS)
5 SG 5 CS (CTS)
6 DR (DSR) 6 DR (DSR)
7 RS (RTS) 7
8 CS (CTS) 8 CD (DCD)
9 RI (CI) 20 ER (DTR)
6-2. Troubleshooting
FP-M control board
9,600
19,200
Connected to
personal computer
(25 pins male)
Pin No. Abbreviation
FG 1 FG
2 SD (TXD)
3 RD (RXD)
4 RS (RTS)
5 CS (CTS)
6 DR (DSR)
SG 7 SG
8 CD (DCD)
20 ER (DTR)
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