CANopen Communication Module DVPCOPM-SL l Program explanations: 1. The first 3 rows of the program set up the communication format between DVP-SA and IFD9503, which is 115,200bps, 7E1-ASCII; communication port is COM2. 2. When M0 = On, send the input status of X20 ~ X28 on DVP-08ST to D256, and send the data in b0 ~ b15 of D0 to M10 ~ M25. 3. When D0 = 1, M10 will be On, and Y0 on DVP-SA MPU will output. 5 Sending SDO, NMT and Reading Emergency by Ladder Diagram 5.1 The Principle See the chart below for sending SDO by WPL program: SDO response message from slave B C PO RT1 P O R T2 IFD9503 VFD-B A: DVP-SV sends out request message to DVPCOPM-SL (master). B:
DVPCOPM-SL (master) sends out request message to the target equipment. C: The target equipment processes the request message and sends the response message to DVPCOPM-SL. D: DVP-SV receives SDO, NMT and Emergency data. 5.2 Structure of SDO Request Message You can edit SDO, NMT and Emergency in “ request message editing area ” . Take the first DVPCOPM-SL master placed on the left hand side of DVP-SV for example. See the table below for the corresponding releation between “ request message editing area ” and “ response message editing area ” and the devices in PLC.
DVP-PLC Application Manual 20 D DV DVPCOPM-S t message from master SDO request message A (PLC -> COPM) SDO response message (COPM -> PLC)