RS232 interface in transparent 
mode (COM 1/2/3)
03/05 AWB2724-1453G
62
Parametric programming of the control lines/cables of the 
COM 2/COM 3 interface
The operation of the control lines/cables is implemented with the 
“ComControl” module. This function only serves the DTR, DSR and 
DCD interface lines of the XIOC-SER hardware interface module. 
The ERROR LED available on the module is also operated via this 
module and controlled with the TRUE command. If the respective 
interface lines are parameterized with TRUE, read/write access is 
possible.
Parametric programming of the interface
In the “ComSettings” module the complete interface parameters 
of the COM 2 or COM3 interface are deposited and stored. These 
parameters are activated by the call up of the module and 
assigned to the respective hardware interface.
Figure 87: Parametric programming of the control lines of the COM 2 and COM 3 interfaces and the ERR-LED
Figure 88: Interface parameter of the COM2 or COM3 interface