The Modbus module with 4 digital inputs was developed for decentralized switching tasks. It is suitable for detecting potential-free switch states, for example electrical limit switches on vent valves or auxiliary contacts of power contactors. The inputs can be operated by means of potential-free switches or contacts or used as voltage inputs. The inputs can be scanned by means of standard registers via a Modbus master. Module address, bit rate and parity are set with two rotary switches on the front or by software.Suitable for decentralized mounting on DIN TH35 rail according to IEC 60715 in electrical distribution cabinets.
| Protocol | Modbus RTU |
| Address range | 00 to 99 |
| Bus interface | RS485 (two-wire bus) |
| Transmission rate | 1200 to 115200 bit/s |
| Operating voltage | 24 V AC/DC ± 10% (SELV) |
| Current consumption | 50 mA (AC) / 20 mA (DC) |
| Relative duty cycle | 100 % |
| Inputs | 4 x digital |
| Input / voltage | 30 V DC |
| Input / high signal | more than 7 V AC/DC |
| Display | Green, red and yellow LED |
| Dimensions (W x H x D) | 35 x 70 x 65 mm |
| Weight | 95 g |
| Operating temperature range | -5 °C to +55 °C |
| Storage temperature range | -20 °C to +70 °C |
| Ingress protection for housing / terminal block | IP40 / IP20 |
