How to Remove I/O Card to Get At Switches
The 50/60Hz DIP switch is located underneath the I/O card on ALL frame sizes of MM440. In the top
right hand corner of the I/O board there is a clip that can be released using a flat bladed screwdriver.
Using the plastic bulge (over the relays on the I/O board), you can hold the I/O board and remove it
easily once the clip has been released.
See following illustrations for instructions on removing the I/O boards in the different frame sizes.
3.1.1 Frame Size A to Frame Size C
1 Remove SDP or
BOP by pressing
4 Move DIP switch
2(2) according to
Figure 3-1 Removing the I/O board on Frame Size A to Frame Size C MM440
Example shown is Frame Size A; Frame Size B & Frame Size C are similar.
3 Use flat blade
2 Slide down
remove I/O board
Quick Start Guide
50/60 Hz DIP
switch is on right.
Down = 50Hz,