Specifications

Installing an S7-200 PLC
2-8
S7-200 Programmable Controller System Manual
C79000-G7076-C233-01
Removing the S7-200 Micro PLC or Expansion Module
!
Warning
Attempts to install or remove S7-200 CPUs or related equipment when they are
powered up could cause electric shock or faulty operation of equipment.
Failure to disable all power to the S7-200 CPUs and related equipment during
installation or removal procedures may result in death or serious personal injury,
and/or damage to equipment.
Always follow appropriate safety precautions and ensure that power to the S7-200
modules is disabled before installation.
To remove the S7-200 CPU or expansion module, follow these steps:
1. Disconnect all the wiring and cabling that is attached to the module that you are
removing. See Figure 2-7. Some CPUs and expansion modules have
removeable connectors.
2. Open the front access door and disconnect the ribbon cable from the adjacent
modules.
3. Unscrew the mounting screws or snap open the clip, and remove the module.
!
Warning
If you install an incorrect module, the program in the micro PLC could function
unpredictably.
Failure to replace an expansion module and expansion cable with the same model
or in the proper orientation may result in death or serious personal injury, and/or
damage to equipment.
Replace an expansion module with the same model, and orient it correctly.
To remove this unit:
Disconnect cable connection here
Figure 2-7 Removing the Expansion Module