Indirect addresing in FX2 PLC

[Chalpa]

Hi: I´m actually developing an application where i receive infor from a server using a RS232 serial port. Initially I only have to store the info for 10-15 units in the production line but now the customer wants that I store the info for 180-200 units in the PLC. I think the memory is not a problem (each units uses 8 register of info) but I need to known if it is possible to use indirect addresing to store and retrieve this info from the FX2 Memory so I don´t have to program each option separately using a Counter and a BMOV instruction. Is it this possible? Regards Edited November 26, 2007 by Chalpa

[Gambit]

Well You don't have indirect programming like the system Q Addrset but it is possible to using indexing All you need to do is place a Z0 - Z7 after the word device. This means that the value of Z is added to the register you are using. For instance if Z0=5 than D23Z0 = D28 For instance your program would look a little like this. M8002 ------- [MOV K0 Z0] {Read serial comm unit 1} [CALL P0] {Read serial comm unit 2} [MOV K8 Z0] [CALL P0] {Read serial comm unit 3} [MOV K16 Z0] [CALL P0] FEND P0 ----[bMOV D0 D1000Z0 K8] END Unit1 info will be on D1000-D1007 Unit2 info will be on D1008-D1015 Unit3 info will be on D1016-D1023 Edited November 27, 2007 by Gambit