Panasonic FP7 Series User Manual page 173

■
SCU COM. port operation status monitor information
Operand Monitor
information
[D] Operation mode
Communication
[D+1]
cassette detection
Reception error
[D+2]
code
No. of occurrences
[D+3]
of reception error
[D+4] Setting error code
[D+5] Error parameter No.
Modem initialization
[D+6]
status
(Note 1) When a command is received in a state where there is no open space in the internal reception buffer,
a reception buffer FULL error occurs.
Take the following countermeasures:
• Shorten the execution period of the General-Purpose Communication Receive Instruction.
• Lengthen the communication send period from the partner device.
(Note 2) It occurs when a command that exceeds 4096 bytes is received. Check the length of the command
that is sent from the partner device.
(Note 3) It occurs when the parity setting or stop bit setting is different from the setting on the partner device. It
may also occur when communication data signal is disturbed by noise, etc.
(Note 4) It occurs when the received characters were overwritten because internal receive processing was not
completed in time.
Take the following countermeasures:
• Lower the baud rate.
• Shorten the execution period of the General-Purpose Communication Receive Instruction.
• Lengthen the communication send period from the partner device.
WUME-FP7COM-07
10.3 Checking Status with PMGET Instruction
Range Settings
U0 U0: MEWTOCOL-COM
U1 U1: MEWTOCOL7-COM
U2 U2: MODBUS RTU
U8 U8: General-purpose communication
U9 U9: PLC link
U0 U0: No communication cassette
U232 U 232: RS-232C
U422 U 422: RS-422
U485 U 485: RS-485
bit9: Receive buffer FULL
bit8: Receive buffer overflow
(Note 3)
bit2: Parity mismatch
bit1: Stop bit not detected (framing error)
bit0: Receive buffer overrun
Number of detection of reception errors stored in the low byte of
reception error code (Unsigned 16-bit cycle)
bit9: Number of transmission data error
bit8: Communication parameter setting error
bit0: Mode setting/change error (A mode number that cannot be set or
changed is specified.)
Parameter number for which data outside the range is
specified
U1 to U12
(Effective only when the communication parameter
setting error occurs.)
H0000 No operation
H0100 During initialization
H0200 Initialization completed
H02FF Initialization failed
(Note 1)
(Note 2)
(Note 3)
(Note 4)
10-9