8/4/2019 3:37 PM | |
Joined: 9/27/2006 Last visit: 9/23/2024 Posts: 12282 Rating: (2685) |
Hello student; You seem to be using Simatic Manager (Step 7 v5.x) to program your VIPA CPU as a CPU 315-2PN/DP. To act as a Modbus RTU slave, the CPU needs a RS-485 serial module on the rack (6ES7341-1CH02-0AE0) and a loadable driver for a Modbus slave (6ES7870-1AB01-0YA0). Here is the manual for the driver: SIMATIC S7-300/S7-400 Loadable Driver for Point-to-Point CPs: MODBUS Protocol, RTU format, S7 is Slave https://support.industry.siemens.com/cs/us/en/view/1218007 The driver comes with a hardware dongle that must be inserted in the back of the CP 341; if it is not present the Modbus functions for the CP 341 will not be activated. To give you a start on the setp for a S7-300 Modbus RTU slave, study this thread on the forum: Modbus Slave (CP341) Sample Program- Hope this helps, Daniel Chartier |
This contribution was helpful to1 thankful Users |
8/4/2019 6:45 PM | |
Posts: 3 Rating: (0) |
operator panel |
Follow us on