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1
1
2
Internal error.
Comm port not active.
3
Transmit buffer full.
4-6
7
Internal errors.
RS232 invalid port.
827
28
Internal errors.
2949
50
51
&
Error allocating memory.
Internal errors.
Automatically resolved.
The connection may have been
lost. Disconnect and connect
again.
The Control isn’t accepting data
sent by the PC. Make sure the
Control is functioning correctly
and reinitialize the Control.
Automatically resolved.
An invalid port was specified
(i.e. COM5). Check the ‘PC Port
Connection’ configuration in the
DDE Server.
Automatically resolved.
The communications DLL was
unable to allocate the required
memory.
Automatically resolved.
Timeout on port.
Retry the operation. If the
problem persist, the Control may
be too busy to respond to the
PC.
Other possibilities:
1) Make sure the DDE Server and
the Control’s communications
board both have the same echo
settings.
2) Make sure the fiber optic
cables are connected correctly
(Receive to Transmit and
Transmit to Receive).
3) Make sure all cables are
connected securely and to the
correct ports.
4) Check the port configuration
on the DDE Server.
Framing error in receive
message.
Retry the operation. This may
be due to a noisy connection or
improperly set baud rate. If
the problem persists, check the
connections and make sure the
baud rate set in the DDE Server
is the same as the baud rate of
the Control.
*
,
$$
52
Overrun error in receive
buffer.
53
Parity error in receive
message.
54
Cable isn't connected
correctly (CTS is low).
55
The system has timed out
waiting for data that has
been placed on the transmit
buffer to be transmitted.
64
A system error has occurred
65
An invalid NULL pointer was
passed.
66
The DLL is busy processing
another request.
67
The Handle is already in
use.
The DLL's state machine is
not in the correct state.
The DLL’s state machine is
not in the correct state or
is stuck in a non-idle
state.
The Client message is
invalid
68
69
70
71
&
A client message was
expected.
*
,
Retry the operation. This may
be due to a noisy connection or
improperly set baud rate. If
the problem persists, check the
connections and make sure the
baud rate set in the DDE Server
is the same as the baud rate of
the Control.
Retry the operation. This may
be due to a noisy connection or
improperly set baud rate. If
the problem persists, check the
connections and make sure the
baud rate set in the DDE Server
is the same as the baud rate of
the Control.
Verify that the correct cable is
being used and connected
correctly.
The Control isn’t accepting data
sent by the PC. Make sure the
Control is functioning correctly
and reinitialize the Control.
The operating system has
reported a problem. This is
most likely do to low resources.
Close any non-essential
applications to make more
resources available.
This is ether a program problem
or the operating system has run
into memory problems. Close any
non-essential applications to
make more resources available.
Restart to DDE Server
application. If the problem
persist, Reboot the computer.
Close the DDE Server and restart it.
Close the DDE Server and restart it.
Close the DDE Server and restart it.
The request received by the
client is corrupted. If the
problem continues, close the DDE
Server and re-start it.
The request received by the
client is corrupted. If the
problem continues, close the DDE
Server and re-start it.
$>
72
An invalid command was
requested.
73
The point type was out of
range. Valid range is 1-15.
74
The point number was out of
range.
75
An invalid quantity of data
was requested.
76
The checksum on the
received message was
different than expected.
77
An error occurred while
parsing the data received
from the Control.
&
*
,
The request received by the
client is corrupted. If the
problem continues, close the DDE
Server and re-start it.
The request received by the
client is corrupted. If the
problem continues, close the DDE
Server and re-start it.
The request received by the
client is corrupted. If the
problem continues, close the DDE
Server and re-start it.
The request received by the
client is corrupted. If the
problem continues, close the DDE
Server and re-start it.
This error should correct
itself. If the problem persists,
make sure the DDE Server and the
Control’s communications board
both have the same echo settings
and check the connection to the
Control.
This error should correct
itself. If the problem persists,
check the connection to the
Control.
$4
3
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