Envoy Application Programming Manual

ADM-2 Multipoint Supervisor Protocol
Envoy Application Programming Manual—427159-001
7-24
File-System Errors
If Envoy is to insert the terminal addresses, then the message is passed to Envoy (with
the WRITEREAD procedure) in the following form:
(message length = 7)
File-System Errors
Upon completion of a file-system request, the multipoint supervisor application should
check for the Guardian 90 file-system error codes shown in Table 7-6.
MCW.<5> = 0 (message formatted by Envoy)
EOT sentry no 0 ENQ
sf is a send function as defined above
entry no n is the one-byte address-list entry number of the last terminal to
receive the message
0
is a one-byte place holder
Table 7-6. File-System Error Codes for ADM-2
Error Code Description
0 Operation successful
160 Request is invalid for device state; protocol error
161 Impossible event occurred for line state
162 Operation timed out
163 EOT received
167 EOT received on line bid
168 NAK received on line bid
171 No response or invalid response received
172 Reply not proper for protocol
173 Maximum allowable NAKs received
176 Poll sequence ended with no responder
177 Text overrun (insufficient buffer space for data transfer)
178 No address list specified