19
Series 1ZC Communicating Sub-Panel Temperature Controller
Communications
Error Codes
The following table lists all possible errors
when receiving or processing request
messages. Since only one error can be
reported to the Bus Master in each
response, the errors are prioritized in
order to resolve conflicts when multiple
errors occurred for a request. This table
lists the errors in the highest to lowest
priority order.
Error Code Error Type
Description
0
No Error
1
Framing Error
One or more
data frames
were received
with one or
more stop bits
missing.
2
Hardware Error
The serial hard-
ware encoun-
tered an error
while receiving
one or more
data frames.
3
Parity Error
Parity does not
match.
4
Bad Request
The request
received has a
predefined
Action Code in
it; however, the
request is either
too short or too
long.
5
Bad Checksum
The checksum
of the received
request does
not compute to
the checksum
received.
6
Bad Zone
Zone ID in
request does
not exist.
Error Code Error Type
Description
7
Bad Command
The request
has an invalid
Action Code in
it. It cannot be
understood.
8
Unsupported The
auxiliary
command is
not supported
Auxiliary
Command in
the controller.
9
Bad Parameter
Parameter ID
requested is
either not
defined or it’s
not supported
in the controller.
A
Bad Data/High
Data misrepre-
sented in the
data field or
Limit Exceeded
data exceeded
the high limit.
B
Write Violation
Attempt to write
to a read-only
parameter.
C
Active Parameter Attempt to write
to a parameter
that is currently
active in the
controller’s
menu system.
D
Data Low Limit
Data exceeded
Exceeded
the low limit.
