MR-CI4 Modbus RTU
Description
The Modbus module with 4 analog inputs was developed for decentralized switching tasks. It is suitable for detecting currents and voltages of, for example, active temperature sensors, electrical vent and mixing valves, valve positions, etc. Each input can be set as current or voltage input by DIP switches on the front. The inputs can be scanned with standard registers via a Modbus master. The module address, the baud rate and the parity are set with 2 rotary switches on the front or by software. Suitable for decentralized mounting on TH35 rails according to IEC 60715 in electrical distribution cabinets.
- Connection with screw type terminal blocks
Technical Data
General Data
Modbus RTU
00 to 99
RS485 (two-wire bus)
1200 to 115200 bit/s
24 V AC/DC +/- 10 % (SELV)
35 mA (AC) / 12 mA (DC)
100 %
4 x analog
0 V to 10 V DC
1 mV (0 to 100 %)
10 mV
0 (4) to 20 mA DC
2 µA
20 µA
Green, red LED
35 x 69.3 x 60 mm
95 g
-5 °C to 55 °C
-20 °C to 70 °C
IP40 / IP20
Check US distributor inventory
Accessories
Accessory of
Part number
1108401332
4250184165699
Downloads
- Data sheet
- ePLAN data - Registration required -
- Brochure (Data logger)
- Brochure (Modbus Gateway - Network connection of Modbus RTU fieldbus components)
- Brochure (Modbus RTU components)
- 3D-Data - Registration required -
- Mounting note (1108401332, 110840133270)
- Mounting note (Safety Instructions multilingual )
- Software manual (Modbus Software-Handbuch)
FAQ's
What can I do if the red ERROR LED on the module lights up or there is no communication?
There are several possible causes, please check the following:
- Operating voltage (A1 / A2) connected and sufficient for the device.
- BUS (A- / B+) connected and not reversed. Pay attention to (- / +), not to A/B.
- Address (rotary switch) set correctly, must not occur twice or be 0.
- Bit rate and parity (rotary switch) set correctly, only possible in programming mode (see mounting note).
- Shielded and twisted cable used.
- Termination resistor (120 Ω) set on both sides.
- Bias resistors available once on the BUS.
- Timeout high enough for all participants to respond (approx. 10 ms).
