Panasonic FP-E Programming Manual page 232

Basic Instructions
Flag conditions
・Error flag (R9007):
・Error flag (R9008):
2 − 122
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Turns on and stays on when:
Turns on for an instant when:
− Any character other than a keyword is specified
− There is no comma between No. 1 and No. 2 keywords
− The small letter of the alphabet is used to specify the keyword (except for
numbers used to specify unit No.)
− No communication cassette has been installed when COM1 or COM2 has
been set
− The setting of the unit No. setting switch is anything other than 0 when
COM1 or COM2 has been set and the unit No. is being changed
− The unit No. set using this instruction is anything other than a value
between 1 and 99
− The baud rate or transmission format for COM1 has been changed when
the PLC link mode is specified for COM1
− The baud rate or transmission format is changed while the Tool port, COM.
port 1, or COM. port 2 is being initialized using MODEM
− The communication mode is set to anything other than the general
communication mode when header and terminator have been set
− Any communication cassette other than the 1−channel RS232C type
communication cassette is installed when using RS control
− The specified unit No. is larger than the largest unit No. specified by the
system register when the COM. 1 port is in the PLC link mode
FPΣ/FP−X/FP0R