Chapter 2 Devices 2_ *1: Refer to the HWCONFIG settings in ISPSoft for the user-defined baudrate. Use SR217/SR218 to set user-defined baudrate (unit: 100bps); when you input 96 in SR217/SR218, it means 9600bps. *2: Refer to section 6.19.3 for the use of communication flags and registers. 5. Clearing the device contents SM204/SM205 Refer to Section 2.1.4 for more information on the latched areas in the device range. 6. PLC error log SR40-SR161 SR40: The maximum number of error logs stored in SR40 is 20. Each error log occupies 6 registers. SR41: The error log pointer points to the latest error log. When an error occurs, the value of the error log pointer increases by one.
The range of pointer values is 0–19. For example, the error log pointer points to the fourth error log when the value in SR41 is 3. The time of the error and the position where the error occurs are recorded in SR42–SR161. The following table lists the corresponding functions of these data registers.
2-81 b6 0011 （H 3） ： 19200 b7 0100 （H 4） ： 38400 0101 （H 5） ： 57600 0110 （H 6） ： 115200 0111 （H 7） ： 230400 1000 （H 8） ： 500000 1001 （H 9） ： 921000 1010 （16#A） ： Undefined 1011 （16#B） ： Undefined 1100 （16#C） ： Undefined 1101 （16#D） ： Undefined 1110 （16#E） ： Undefined 1111 （16#F） ： User-defined*1 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, and the auxiliary relays 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.
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. The watchdog timer does not act during this period of time. Number Slot Module Error Time when the error occurs