СРС308 Processor Module
Phoenix® BIOS
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7.3.3
I/O Device Configuration
Input/output devices configuration menu. The submenu screen is shown in the figure below.
Fig. 7-9: I/O Device Configuration Submenu Screen
Where:
XP3, XP6, XP18 [485/422], XP17 [485/422]
– Setting RS232 COM1, COM2 ports, as well
as RS485/422 COM3, COM4 parameters respectively;
Echo
: Echo mode control (receiver enabling or disabling at the moment of data transfer) for
COM3 and COM4 ports (XP18 and XP17 connectors)
Terminator
: control of 120 Ohm terminating resistors connection for COM3 and COM4
ports (XP18 and XP17 connectors).