The main unit can also be used as a standalone device, capable of controlling any other expansion unit

　　■　 8 digital inputs

　　■　 2 start/restart input interlock and EDM

　　■　 2 pairs of OSSD Cat. 4 safety outputs (PNP 400 mA)

　　■　 2 status outputs (PNP 100 mA)

　　■　 4 test outputs (used for short circuit monitoring)

M1 is not compatible with the following expansion units: MA4, MI8O4, MO4L

M1S enhanced main unit The main unit can also work independently and can control any other expansion unit

　　■　 8 digital inputs

　　■　 4-way start/restart EDM

　　■　 4 single-channel output or two pairs of safety outputs

　　■　 4 status outputs (PNP100ma)

　　■　 4 test outputs (used for short circuit monitoring)

M1S can be compatible with any expansion module