System Configuration Procedures - Bell 5902 Hardware Manual

S9:
Carrier Detect
Delay Time
S10:
Carrier Loss
Time
Tests of a TeleSAFE RTU polling a SmartWIRE I/O system using Modbus RTU protocol
Note:
over dedicated wiring have shown no errors without any CTS-Hold time or Soft Carrier
Turn-off transmission. Depending on the specific application, it may be possible to
eliminate these times without causing data errors.
5.4

System Configuration Procedures

The sample configurations described above work with most systems. Use the configuration
procedures below to help get a new communication system installed and functional. There is a
procedure for point-to-point systems and for multi-drop systems.
The best place to work out problems with a new communication system is on a workbench or desk
in an office. We recommend you test the basic elements of the system before field installation.
5902 Bell 202 Modem Hardware Manual
October 19, 2007
Carrier Detect 83 ms
Delay
S9=10
(CD0/CD1)
Carrier Loss 83 ms
Delay
S10=10
(CL0/CL1)
ms
SC0 closed
SC1 closed
(see note)
51 ms
CD0 open
CD1 closed
23 ms
CL0 open
CL1 closed
30