AH500 Programming Manual Please refer to section 6.17 for more information related to the real-time clock. 4. The functions related to communication SM96~SM107, SM209~SM212, SR201~SR202, and SR209~SR216 SR215 and SR216 are used to record the interface code of the communication port on the PLC. The functions represented by the interface codes are as follows. When the interface of the communication port on the PLC is RS485, RS232, or RS422, SR209 records the communication format of COM1 on the PLC, and SR212 records the communication format of COM2 on the PLC. The setting values of the communication protocols are shown in the following table.
Please refer to section 6.19 for more information related to the communication instructions. 5. Clearing the contents of the device SM204/SM205 Please refer to section 2.1.4 for more information related to the latched areas in the device range. 2-76 Code 0 1 2 Function RS232 RS485 RS422 b0 Data length 7 (value=0) 8 (value=1) Parity bits 00 : None b1 01 : Odd parity bits b2 10 : Even parity bits b3 Stop bit 1 bit (value=0) 2 bits (value=1) b4 0001 (16#1) : 4800 b5 0010 (16#2) : 9600 b6 0011 (16#3) : 19200 b7 0100 (16#4) : 38400 0101 (16#5) : 57600 0110 (16#6) : 115200 0111 (16#7) : 260400 RS-232 does not support the baud rate. 1000 (16#8) : 520800 RS-232 does not support the baud rate.
1001 (16#9) : 1041600 RS-232 does not support the baud rate. b8~b15 Undefined (reserved) Device number Device which is cleared SM204 All non-latched areas are cleared. The non-latched areas in the input relays, the output relays, the stepping relays, the auxiliary relays, and the link registers are cleared. The non-latched areas in the timers, the counters, and the 32-bit counters are cleared. The non-latched areas in the data registers and the index registers are cleared. It takes 530 milliseconds to clear the device. The watchdog timer does not act during this period of time. SM205 All latched areas are cleared. The latched areas in the timers, counters, and 32-bit counters are cleared.
The latched auxiliary relays are cleared. The latched data registers are cleared. It takes 30 milliseconds to clear the device. The watchdog timer does not act during this period of time.