S7 communication
Communication
114 Function Manual, 12/2017, A5E03735815-AF
S7 communication via PROFIBUS DP interface in slave mode
You can find the "Test, commissioning, routing" check box in STEP 7 in the properties of the
PROFIBUS DP interface of communications modules (e.g. CM 1542-5). Using this check
box, you decide whether the PROFIBUS DP interface of the DP slave is an active or passive
device on PROFIBUS.
● Check box selected: The slave is an active device on PROFIBUS.
● Check box cleared: The DP slave is a passive device on PROFIBUS. You can only set up
S7 connections configured at one end for this DP slave.
Figure 7-1 "Test, commissioning, routing" check box
Configuring S7 connections for PUT/GET instructions
You can create S7 connections and assign the parameters for these in the connection
parameter assignment of the PUT/GET instructions. Changed values are checked
immediately by the connection parameter assignment for input errors.
Requirement: A PUT or GET instruction is created in the programming editor.
To configure an S7 connection using PUT/GET instructions, follow these steps:
1. In the program editor, select the call of the PUT or GET instruction.
2. Open the "Properties > Configuration" tab in the inspector window.
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