Micromod MOD: 30ML and Modcell Maintenance for 2001N, 2002N, and 1800R - Manual (Page 99)

MOD30ML and Modcell Maintenance Manual
EVENT CODES AND TRANSITION MESSAGES
Table 7-2. Event Codes, Description and Action (Cont’d)
Block
Type
Codes Full Message Text Description/Action
MSC 4 MODULE MISMATCH The slot(s) configured for a MODBUS
communications module is either empty or the
installed module does not match the slot
configuration.
MSC 5 MESSAGE CHECK ERROR A received message could not be processed
because it failed the Cyclical Redundancy
Check (CRC) check.
MSC 6 PARITY ERROR A parity error was detected for a received byte.
The message is discarded.
MSC 7 BREAK ERROR A break sequence was detected (a character
with zero value and framing error was received)
by the 68032 for a received byte. The
message is discarded.
MSC 8 FRAMING ERROR No stop bit was detected by the 68032 for a
received byte.
MSC 9 NOISE ERROR The 68302 checked a bit three times and the
three samples were not identical.
MSC 10 OVERRUN ERROR The central processor could not store a
received byte before the next byte was
received.
MSC 11 INVALID MESSAGE The message length was too large, the
message size was incorrect, or there was an
illegal use of a global message. The message
is discarded.
MSC 12 EXCESS MESSAGES FOR PORT The receive buffer for this port had no room for
the message being received. A message is
lost.
MSC 13 EXCESS MESSAGES FOR TASK The maximum number of requests queued for a
group has been reached. A message is lost.
MSC 14 DEFAULT COMM SWITCH SET The default communication switch is set (yes)
on the RS-232 or RS-485 module. Therefore,
this block is functioning as a SLAVE using 9600
baud, no parity and one stop bit for it’s
communication parameters.
7 -12