Omron CQM1H-SCB41 Operation Manual page 146

Troubleshooting
Error
code
4 Hex
5 Hex
Indicator Error details
ERR/ Protocol data
ALM: syntax error
Flashing
ERR/ Protocol macro
ALM: execution error
Flashing during port ini-
tialization
Cause
There is a code that Check the following items and correct the
cannot be executed problem.
during protocol exe-
• Check whether the total specified num-
cution.
ber of link words in the area (O1, O2,
I1, I2) exceeds 128.
• The same area with link word specifica-
tion is used by both ports 1 and 2.
• A write instruction with constant specifi-
cation is specified.
• An EM Area read/write instruction is
specified as an interrupt notification.
• There are more than 30 write attributes
set for one message.
• The length of a send/receive message
is set to 0 bytes.
• The length of a send/receive message
is longer than 127 bytes.
• No messages are registered for matrix
reception.
• Both RTS/CTS flow control and Xon/
Xoff flow control are set for the same
transmission line.
The PMCR instruc-
Check if the PMCR instruction was exe-
tion was executed cuted during any one of the following pro-
while the port was cesses.
being initialized.
• While the serial communications port
was being restarted.
• While the serial communications mode
in the PC system setup of the Serial
Communications Board was being
modified using the STUP instruction.
• While the serial communications mode
in the PC system setup of the Serial
Communications Board was being
modified using the Programming
Device.
Section 9-2
Remedy
131