IR-712A Universal IR Learning Remote Module (Ver. 1.3, Aug/23/2016) 8
2.4 Wire connection
The IR-712A supports 2 communication ports: RS-232 and RS-485 interfaces. Only
one interface can be used at the same time
(*)
. Two IR outputs at the bottom are 3.5
mm audio jacks for IR emitter cables.
* Note:
1) Before the firmware v1.07 (included):
- Default serial interface is RS-232.
- Use IR utility to select RS-232 or RS-485 as the communication port.
- The TR/LN LED indications the current communication port after power-on within 3
seconds.
2) After the firmware v1.20 (included):
- RS-232 and RS-485 port of the IR-712A can be used without the utility configuration.
Though there is the setting item of the serial port in the IR utility, it won
’t affect the
module.
- The TR/LN LED blinking 3 times after power-on within 3 seconds is for the function
of restoring to the default communication parameters.
2.4.1
RS-232 connection
The wire connection for IR-712A
’s RS-232 port is shown in Figure 2-4.
Figure 2-4
RS-232 wire connection.
Please refer to Fig. 2-6 if the RS-232 connection cable (e.g. CA-0910, Fig. 2-5) is
applied. If there is no DB9 serial port on the host PC, it is recommended to use USB to