监控设备：小的有数据可监视数据；大的还可能有图形监视器，可通过画面监视数据。除了不能改变PLC的用户程序，编程器能做的它都能做，是使用PLC很好的界面。性能好的PLC，这种外部设备已越来越丰富。
Siemens Simatic S5 6ES5 317-3UA11 & 6ES5 307-0MM11
OPCON 880C-6501 WITH EATON 1280B-6501
Siemens Simatic S7 6ES7 193-0CB20-0XA0
GENERAL ELECTRIC CR120KT00102AB RELAY NIB
Siemens K5001 D33
TBI-BAILEY TB82EC CONDUCTIVITY TRANSMITTER
Siemens 4EN4101-0SB T40/F
Siemens Simatic S7 6ES7 370-0AA01-0AA0
NUPRO SS-8UK-TWT2AW4C VALVE SS8UKTWT2AW4C
TRIANGLE PACKAGE MACHINERY A07165 4-VALVE CURRENT SOURCING BOARD
Siemens Simatic S7 6ES7 158-0AD01-0XA0
Siemens Servo Motor 1FT5072-0AC01-1-Z G51 K04 K42
BOSCH CODE READER
Siemens Simodrive 6SN1114-0NA00-0AA0
ALLEN BRADLEY 700-BXL440A6 SERIES B RELAY 700BXL440A6
Siemens Simovert Masterdrives 6SE7023-3EP85-0AA0
AMS CONTROLS MODEL XL100D CONTROLLER
HYSTER COIL NEW
Siemens SIMOVERT MASTERDRIVES 6SE7012-0TP70-Z
ORIENTAL E SPEED CONTROL MOTOR E
MODICON SW-AP98-RXA HOT STANDBY SOFTWARE SWAP98RXA
MODICON B INPUT MODULE NEW B551001
Siemens 8WD4428-6XD
PHD A3VP3/4X11/2X1/4 PNEUMATIC CYLINDER
Siemens Interface Circuit Board A IS.12
GOULD AMP TRAP ATQ4 FUSE LOT NEW
Siemens Simatic S7 6ES7 222-1BF22-0XA0
Siemens Simodrive 6SC6000-0NA02
Siemens 6FX4002-2CF04-1AE0
MOORE PRODUCTS INTERFACE CARD
CARRIER CHR03 BOARD NIB 906A
TEXAS INSTRUMENTS WORD INPUT MODULE NEW
ALLEN BRADLEY 802T-R8TD LIMIT SWITCH NEW 802TR8TD
Siemens Servo Motor 1FT6024-6AK71-4DA0
Siemens Sinaut 6NH9821-0BC11
Siemens Simatic S5 6ES5 441-7LA12
YORK CABLE NIB