1、PLC supports 2 channels of 232, one of which is used to write monitoring programs 2、Can be used for touching screen communication, extended temperature, pressure, etc. 3、All relays use imported high‑quality relays, relay contacts, AC no more than 5A , DC no more than 30V 5A. 4、The CPU adopts imported STM32F103 series, the download speed is extremely fast, basically downloading in seconds, mainly to save labor time in batches. 5、This board is a PLC board, directly use programming software to compile ladder diagrams, write directly to PLC, and online monitoring Item Type: Industrial Control Board Optional Style: without Base and Shell, with Base and Shell Technical Parameter: Input Power: DC24V Program Steps: 8000 steps Communication Port: 2 x Communication Port: : 2 x RS232 (standard 9-pin serial port FX3u protocol 38400, 7, E, 1) 1 x RS485 Input Point X Component: X0-X17, DC24 input, low level active. Among them X0-5 is the high-speed counting input port (12KHZ) Intermediate Relay M: M0-M3071, save range can be set M0-M1023 Step Point S: S0-1023, save range can be set S0-S1023 100Ms Timer: T0-T199, accumulative power-down save T184-T199 10Ms Timer: T200-T249, accumulative power-down save T246-T249 1Ms Timer: T250-T383, of which T250-255 is cumulative 16-Bit Counter: C0-C199, C100-199 32-Bit Counter: C200-C219, save C220-C234 when power off 32-Bit High-Speed Counter: C235-255; C235-240 is a single-phase counter without frequency multiplication; C241-240 is a single-phase counter with 2 times frequency; C247-249 is a two-phase counter without frequency multiplication; C250-252 is double Phase counter, 2 times frequency; C253- is two-phase counter, 4 times frequency; Register D: D0-D7999, the save range can be set D0-7999, Indirect Addressing Pointer V, Z: V0-7, Z0-7 P Subroutine Jump Number: P0-63 I Interrupt: X0-5 external interrupt. Timer interrupt (1MS as the unit). The counter is interrupted. Special M Part: M8000 is normally closed when running, M8002 is power-on pulse, M8011 is 10Ms pulse, M8012 is 100Ms pulse 1 x Industrial Control Board