PLC is ultra miniaturized PLC, which applies to all walks of life, all kinds of occasions in the automatic detection, monitoring and control. S7-200 PLC's powerful stand-alone operation, whether it, or even into the network can implement complex control functions. S7-200PLC can provide four different basic models to choose from and eight kinds of CPU use 6ES7221-1BH22-0XA8 EM221 16 into 24VDC, switch 6ES7221-1BF22-0XA8 EM221 8 into 24VDC, switch 6ES7 221-1EF22-0XA0 EM221 8 into the 120 / 230VAC, switch 6ES7222-1BF22-0XA8 EM222 8 出 24VDC, switch 6ES7222-1EF22-0XA0 EM222 8 出 120V / 230VAC, 0.5A switch 6ES7222-1HF22-0XA8 EM222 8 illustrates the relay 6ES7 222-1BD22- 0XA0 EM222 4 出 24VDC solid -MOSFET 6ES7 222-1HD22-0XA0 EM222 4 illustrates the relay dry contact 6ES7223-1BF22-0XA8 EM223 4-in / 4 24VDC, switch 6ES7223-1HF22-0XA8 EM223 4 into 24VDC / 4 illustrates the relay 6ES7223 -1BH22-0XA8 EM223 8 in / 8 24VDC, switch 6ES7223-1PH22-0XA8 EM223 8 into 24VDC / 8 illustrates the relay 6ES7223-1BL22-0XA8 EM223 16 in / 16 24VDC, switch into 6ES7223-1PL22-0XA8 EM223 16 24VDC / 16 illustrates the relay 6ES7223-1BM22-0XA8 EM223 32 in / 32 24VDC, switch 6ES7223-1PM22-0XA8 EM223 32 into 24VDC / 32 illustrates the relay into 6ES7231-0HC22-0XA8 EM231 4 * 12 precision, analog 6ES7231- 7PB22-0XA8 EM231 2 into * RTD, analog PT10000 (RTD) 6ES7231-7PD22-0XA8 EM231 4 into * thermocouple, analog (TC) 6ES7232-0HB22-0XA8 EM232 2 出 * 12 precision, analog 6ES7235- 0KD22-0XA8 EM235 4 in / 1 * 12 precision analog 6ES7277-0AA22-0XA0 EM277 PROFIBUS-DP interface module 6GK7 243-2AX01-0XA0 CP243-2 AS-i interface module 6ES7253-1AA22-0XA0 EM253 Position Module 6ES7 241-1AA22-0XA0 EM241 modem module. 6GK7243-1EX01-0XE0 CP243-1 Industrial Ethernet Module 6GK7243-1GX00-0XE0 CP243-1IT Industrial Ethernet Module