Siemens S5-100U User Manual page 35

S5-1OOU
Removing the CPU
Remove the 1/0 module located at slot "0".
2. Pull the connection (ribbon cable) between the CPU and the first bus unit.
3. Pull the connections between the CPU and the power supply module.
4. Use a screwdriver to press down on the slide on the bottom of the module
5. Swing the module up and out of the standard mounting rail.
Mounting Bus Units
Use the same procedures to mount the bus unit that you used to mount both the power supply
module and the CPU. Hooks are located on the sides of each bus unit. These hooks are used to
connect bus units to each other and to connect bus units to the CPU.
Connecting Bus Units to Each Other or to the CPU
1. Pull the ribbon cable connector located on the top left of the bus unit out of its holder.
2. Plug the connector either into the receptacle located on the right side of the CPU or into the
receptacle of the adjacent bus unit located on the left (see Figure 3-2).
Removing Bus Units
1.
Pull the connections to the neighboring bus units or to the CPU.
2. Use a screwdriver to press down on the slide.
3. Swing the module up and out of the standard mounting rail.
EWA 4PIEB 8126120-02
Figure 3-2. Removing Bus Units
Installation Guidelines
3-3