THOMSON REMOTE COMMUNICATION - V3.0 User Manual page 20

SECTION 1
Failure to
communicate with
PC (Modem
connected).
Failure to
communicate with
PC.
PM055 Rev 2 00/08/31
COMMUNICATION INTERFACE MODULE
20 is for the expansion port, damage may occur to the CIM if this
port is connected! When direct connection is used from port 2A
to a PC, ensure a null modem cable or connector is used. (see
Host PC Connection).
Verify all settings in the THS 2000 program are correct. Critical
settings are as follows:
Port 3 baud rate--4800
Controller address--THS setting and controller setting must
match
Site Name--THS setting and CIM setting must match. Note:
factory default setting in CIM is "site"
Site Password--THS setting and CIM setting must match. Note:
factory defeat setting in CIM is "user".
If multiple MEC 20 controllers are connected to a single system,
verify all controller node addresses are different.
RTU site may be busy calling out if an alarm condition is present
on the controller. Reset all fault conditions at the controller and
set for automatic mode to cancel the auto call out condition.
Verify PC modem operates correctly (test independently with
another software system).
Verify PC modem is set for 9600 baud operation.
Ensure phone numbers programmed for both PC site location
and RTU equipment location are correct.
If you encounter difficulty connecting to a CIM with the Host
software make sure the CIM is not trying to call-out. When the
CIM is trying to call-out to the Host sites it will not respond to
outside requests for connection. In this situation the user can be
patient and make repeated attempts at connection until the CIM
has exhausted its phone numbers and retries (can be over 12
mins in some cases with 3 numbers and 3 retries). Or the user
can let the host successfully call-out to the Host software. After
the phone numbers are successfully attempted or retries are
exhausted the CIM will go back into a log-in ready state. If time is
important, the CIM may be power cycled, for a brief time after the
CIM power is restored (after the 2 quick blinks on the Port 2
LED) the CIM will be log-in ready. However the CIM will
eventually go into a call-out state to report the site alarm
situation.
The above situation is the most common cause for not being
14
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