Rockwell Automation 1775-S5_SR5,D17756.5.5 User Manual PLC-3 FAMILY I/0 - Manual (Page 169)

DH/DH+ Error Codes
Appendix B
B-4
Error Code Meaning Associated
Commands
Error Type
84 reply diagnostic status Backplane error occurred during determination of the physical address of the end
of the ladder program or of the end of user memory. In polled mode, the
RSĆ232ĆC port has received a NAK, which causes a system reset.
reply PLC/PLCĆ2 read,
write
Local PLCĆ3 backplane error (either memory parity or timeout/disconnect). In
polled mode, the RSĆ232ĆC port has received a NAK, which causes a system
shutdown.
reply PLCĆ3 read and
write
Backplane error (memory parity or timeout/disconnect). In polled mode, the
RSĆ232ĆC port has received a NAK, which causes a system reset.
85 reply diagnostic read The command is an illegal request to read from the scanner's backplane window.
reply PLC/PLCĆ2 read • PLCĆ3 file does not exist.
• PLCĆ3 file is too small.
• PLCĆ3 file is more than 65,535 words long.
reply PLC/PLCĆ2 bit write • PLCĆ3 file does not exist.
• Destination bits do not exist in PLCĆ3 file.
• Length of PLCĆ3 file is greater than 65,535 words.
reply PLC/PLCĆ2 word
write
• Destination file does not exist in PLCĆ3 memory.
• Destination word does not exist in the destination PLCĆ3 file.
• Length of the destination file is greater than 65,535 words.
86 reply PLC/PLCĆ2 bit write Keyswitch setting at local PLCĆ3 controller prohibits access.
reply PLC/PLCĆ2 word
write
Local keyswitch settings prohibit writing into desired destination file.
reply PLCĆ3 write Keyswitch setting disallows access to file.
87 reply PLC/PLCĆ2/PLCĆ3
read and write
The local PLCĆ3 controller is in program mode. There may or may not be a major
system fault.
91 local all • Handshaking lines on the RSĆ232ĆC link are not connected properly.
• Multiple wacks on link.
92 local all The remote station specified does not acknowledge (ACK) the message.
94 local all Remote station is disabled.
112 local all Undefined operator in an assignment statement or expression.
114 local all Illegal expression syntax.
115 local all Illegal unary (prefix) operator in an expression.
117 local all Undefined data following a valid address in a CREATE command, or undefined
data following a valid symbol in a delete command.
121 local all Symbol undefined because it appears as the source in an assignment command
before it is defined. For example, a statement of the form A = A + 6 generates
this error if user symbol A has not appeared previously.
123 local all System symbol must be a symbolic address. This error occurs if a procedure
name is used in place of a symbolic address in an assignment statement or if the
system symbol referenced in an assignment does not exist.