Siemens SIMATIC S7-1200 - 4.3.6 Removing and reinstalling the S7-1200 terminal block connector

Installation
4.3 Installation and removal procedures
S7-1200 Programmable controller
68 System Manual, V4.2, 09/2016, A5E02486680-AK
4.3.6
Removing and reinstalling the S7-1200 terminal block connector
The CPU, SB and SM modules provide removable connectors to make connecting the wiring
easy.
Table 4- 10 Removing the connector
Task
Procedure
Prepare the system for terminal block connector removal by removing the power from
the CPU and opening the cover above the connector.
1. Ensure that the CPU and all S7-1200 equipment are disconnected from electrical
power.
2. Inspect the top of the connector and locate the slot for the tip of the screwdriver.
3. Insert a screwdriver into the slot.
4. Gently pry the top of the connector away from the CPU. The connector will release
with a snap.
5. Grasp the connector and remove it from the CPU.
Table 4- 11 Installing the connector
Task
Procedure
Prepare the components for terminal block installation by removing power from the
CPU and opening the cover for connector.
1. Ensure that the CPU and all S7-1200 equipment are disconnected from electrical
power.
2. Align the connector with the pins on the unit.
3. Align the wiring edge of the connector inside the rim of the connector base.
4. Press firmly down and rotate the connector until it snaps into place.
Check carefully to ensure that the connector is properly aligned and fully engaged.