符号变量符号变量是没有分配确定地址的变量(与典型高级语言的变量类似)。除了这部分所述的，你可以象使用映射变量–样使用符号变量。.在编程软件中，符号变量的地址栏空置。在变量属性栏中删除变量地址就可以将映射变量转化为符号变量。
Texas Instruments 500-5053 Basic Module #7334
Barber Colman Data Handler Board A-13766 #37134
Barber Colman Data Handler Board A-13766-102 #37210
Yokogawa Compumotor Servo Actuator SR1030B62 #13785
Boy PC Board 9626225 Circuit Board, #17128
Boy PC Board 9626353 Circuit Board, #17129
Barber Colman Data Handler PC Board A13937-313 #17528
NIB Bosch 10700-78587-202 PC Board I/O Module #23201
Van Dorn Operation Interface PCB 99865 #38443
STI Light Curtain MS46SR-20-610-Q1-R-NC-FP Rec. #13938
Bei Encoder RAS25-S-4096-G-0C-05-S-X #32466
Nachi PCB Board UM-837A #3311
Moog 150-101C Power Supply 150101C #8354
Pertron Circuit Board 1400382 Processor PCB #32204
Van Dorn 99865 Circuit Board #22122
Numatics Pneumatc Valve 6JDSPA34UL2 #10557
Mattec Dual Processor CPU Board 350-0091A #13540
Mattec Circuit Board 350-0109A #13575
