1、 35 4 PLC 14 PLC PLC CPU I/O PLC I/O CPU CPU I/O CPU PLC I/O PLC 832 CPU Silicon Labs 51 C8051F040 2930313233PLC PLC / / ROM RAM C8051F040 64K FLASH PLC FLASH FLASH SRAM RAM I/O CPU SRAM PLC 4.1 PLC / PLC PLC 36 / PLC I/O / A/D D/A I/O AI AO DI DO PI 14 PLC 8 6 363738394043444.1.1 DI 024V 012V CPU P
2、LC PLC 4.1 12V I0 P3.7 CPU U11 TLP180 R20 C22 R55 R46 CPU 3.3V U11 TLP180 R20 3K R46 5.1K C22 104 5V1 12V2 GND1 I0 P3.7 R55 3K 4.1 37 I0 12V P3.7 CPU 1 I0 LED S P3.7 CPU 0 4.1.2 DO 024V 05V 0 1 PLC PLC PLC 1 0 1A 4.2 NPN ULN2003 ULN2003 7 LED 500mA 30V TTL 2.7K 7.2K 3K ULN2003 74HC04 3.3V ULN2003 R8
3、 101/1KV OCOM0 O0 38 K1 PA1a-12V 12V1 R8 10K C22 101/1KV OUT0 OCOM0 O0 P1.0 1 2 14 7 U2A 74HC04 3.3V GND1 NPN DAR 12V1 4.2 1 P1.0 0 74HC04 1 0 4.1.3 CPU 74HCT244 LED LED 4mA 74HCT244 4.2 PLC PLC PLC PLC PLC PLC PLC PLC 0 PLC 1 PLC RS232 RS485 CAN I/O PLC 4.2.1 RS-232 RS-323C EIA( BELL 1969 0 20000b/
4、s 39 RS-232C 3334 4.3 0 1 PLC 6N137 TTL 10Mbps 74HC04 TX EIA-RS-232C TTL EIA-RS-232C TTL TTL EIA-RS-232C TTL MAX232ACSE R1 IN 13 R2 IN 8 T1 IN 11 T2 IN 10 GND 15 V+ 2 V- 6 VCC 16 R1 OUT 12 R2 OUT 9 T1 OUT 14 T2 OUT 7 C1+ 1 C1 - 3 C2+ 4 C2 - 5 U7 MAX232ACSE C31 105 C34 105 C32 105 C35 105 C33 105 5V2
5、 GND2 GND2 5V2 R15 1M R16 1M GND2 GND2 GND2 FTX0 FRX0 FTX1 FRX1 R14 1M R17 1M RS232IN0 RS232IN1 RS232OUT0 RS232OUT1 NC 1 A 2 K 3 NC 4 VCC 8 VE 7 VO 6 GND 5 U3 6N137 NC 1 A 2 K 3 NC 4 VCC 8 VE 7 VO 6 GND 5 U4 6N137 R8 300 R9 300 R2 3K R3 5.1K 5V2 5V2 5V1 FRX0 FTX0 GND1 GND2 RX0 GND1 R64 5.1K GND1 TX0
6、 GND1 3.3V 3 4 14 7 U1B 74HC04 4.3 40 4.2.2 CAN CAN CAN CAN PHILIPS SJA1000 CAN MC68HC05X4 Silicon Labs C8051F040 CAN C8051F04x CAN Bosch CAN CAN 2.0B CAN CANTX CANRX / RAM 32 CAN CAN CAN CIP-51 4.4 CAN 6N137 74HC04 PCA82C250 CAN CAN CANH CANL 110 NC 1 A 2 K 3 NC 4 VCC 8 VE 7 VO 6 GND 5 U10 6N137 NC 1 A 2 K 3 NC 4 VCC 8 VE 7 VO 6 GND 5 U9 6N137 R13 300 R12 300 R7 5.1K R6 3K 5V2 PCANTX GND2 5V2 PCANRX 5V1 CANRX GND1 GND1 R66 5.1K GND1 CANTX 1 2 U1A 74HC04 TXD 1 GND 2 VCC 3 RXD 4 Vref 5 L 6 H 7 Rs 8 U8 PCA82C250 GND2 5V2 PCANTX PCANRX GND2 R18 30K R19 110 CANH CANL 4.4 CAN
