User Manual PLC-3 FAMILY I/0 Instruction Manual

DH/DH+ Error Codes
Apendix B
B-3
Table B.A
Local
and Reply Error Codes
Error Code Error Type Associated
Commands
Meaning
32 local all The size of the local file involved in a file assignment command is greater than
65,535 bytes.
34 local all A station number greater than 376 (octal) is specified for the remote address in
an assignment command.
35 local all Attempt to send unprotected command is invalid.
37 local all The perpacket timeout, set through LIST, runs out before receiving a reply. This
means that the remote station acknowledges (ACK) the command message but
does not send the reply in the allotted time (cf. error 92).
81 reply diagnostic read
• A 2byte ADDR and 1byte SIZE field is missing after the FNC byte in the
command message.
• The number of bytes of data requested in the SIZE field is greater than the
maximum number allowed per reply packet (244), or SIZE is 0 (zero).
reply PLC/PLC2 read
• The required 2byte ADDR and 1byte SIZE field are missing in the
command message.
• The ADDR value is odd (it does not specify a word address).
• The value SIZE is 0.
• The value SIZE is greater than 244.
• The SIZE value specifies an odd number of bytes.
reply PLC/PLC2 bit write Incomplete bit description because the number of bytes after the TNSW is not a
multiple of four.
reply PLC/PLC2 word
write
• A 2byte ADDR field is expected after the TNSW word, but only one byte is
present.
• An odd number of data bytes in the command packet.
• The ADDR value is odd (it does not specify a word address).
reply PLC3 read
• More than one byte of data is after the byte address.
• Number of bytes to read is odd.
• Number of bytes to read is zero.
• Number of bytes to read is greater than the maximum allowed in a reply
packet (244).
• Sum of packet offset and size of data in words is greater than 65,535.
• Sum of packet offset and size of data in words is greater than the total
transaction size.
reply PLC3 bit write More than four bytes of data exist after the address in the command message.
reply PLC3 write
• Less than two bytes of data are after the end of the block address.
• An odd number of data bytes is after the end of the block address.
• Sum of packet offset and size values specifies more than 65,535.
• Sum of packet offset and size is greater than total transaction size.
83 reply PLC/PLC2/PLC3
read and write
The local scanner has executed a shutdown request to the local PLC3 controller.