Chapter 6 Applied Instructions ASCII mode You do not need to convert the ASCII codes and they are all expressed in 16# values. ES3 sends the communication command: “ ： 01 01 05 00 00 10 E9 CR LF”. ES3 receives the communication command: “ ： 01 01 02 D2 04 26 CR LF”. RTU mode ES3 sends the communication command: “01 01 05 00 00 10 3D 0A”. ES3 receives the communication command: “01 01 02 D2 04 E4 9F”. If the format is correct, SM100 is ON. 2. The response messages from the DVP-ES2 are stored in registers D10.0 to 10.15 (the data read is D10.15–D10.0=16#04D2). 6_ 3.
After the receiving the data sent back from the DVP-ES2, the PLC confirms the data format sent back from DVP-ES2 and determines if it is correct. If no error occurs in the format, the corresponding special flags SM100 are ON; if not SM102 is ON. 6-537 S Register for reading and writing the data D10.0 n Data length 16 Device D10.7 D10.6 D10.5 D10.4 D10.3 D10.2 D10.1 D10.0 State ON ON OFF ON OFF OFF ON OFF Value D 2 Device D10.15 D10.14 D10.13 D10.12 D10.11 D10.10 D10.9 D10.8 State OFF OFF OFF OFF OFF ON OFF OFF Value 0 4