| Model | S7-14MR | S7-14MT | S7-20MR | S7-20MT | S7-30MR | S7-32MT | S7-40MR | S7-40MT |
| points | 8 input 6 relay output | 8 input 6 transistor output | 12 input 8 relay output | 12 input 8 transistor output | 16 input 14 relay output | 16 input 16 transistor output | 24 input 16 relay output | 24 input 16 transistor output |
| communication port | 2 RS485 and 1 Ethernet port | 2 RS485 and 1 Ethernet port | 2 RS485 and 1 Ethernet port | 2 RS485 and 1 Ethernet port | 2 RS485 and 1 Ethernet port | 2 RS485 and 1 Ethernet port | 2 RS485 and 1 Ethernet port | 2 RS485 and 1 Ethernet port |
| Positioner | 2 adjustable positioner | 2 adjustable positioner | 2 adjustable positioner | 2 adjustable positioner | 2 adjustable positioner | 2 adjustable positioner | 2 adjustable positioner | 2 adjustable positioner |
| Pulse output | None | 1 channel 10K | None | 1 channel 10K | None | 1 channel 10K | None | 1 channel 10K |
| high-speed counting | 6 channel 10K | 6 channel 10K | 6 channel 10K | 6 channel 10K | 6 channel 10K | 6 channel 10K | 6 channel 10K | 6 channel 10K |
| Size | 10*9*6cm | 10*9*6cm | 10*11*6cm | 11*11*6cm | 10*12.6*6cm | 10*12.6*6cm | 10*12.6*6cm | 10*12.6*6cm |