MR-Multi I/O Modbus RTU
Description
The Modbus module MR-Multi I/0 is a compact and rapidly to install solution to connect digital and analog signals from the actor and sensor level directly to a control unit in building automation via Modbus RTU protocol. 29 I/Os, some of them are configurable, are available for different tasks. With strong inductive loads, we recommend protecting the relay contacts with an RC element. The inputs and outputs can be switched and 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.
Technical Data
General Data
Modbus RTU
00 to 99
RS485 (two-wire bus)
1200 to 115200 bit/s
24 V AC/DC / +/- 10% (SELV)
220 mA (AC) / 110 mA (DC)
100 %
11 x Optocoupler,galvanically isolated
1 x per DIN EN 62053-31, Class A
configurable
6 x 40 Ohm to 4 MOhm
6 x 0 to 10 V DC
1 x analog 0 to 20 mA DC
4 x changeover (4PDT) / 250 V AC / 6 A
4 x 24 V DC / 100 mAgalvanically isolated
2 x analog 0 to 10 V DC / 5 mA,galvanically isolated
125 x 93 x 60.81 mm, 7 TE, TH35
385 g
-5° to +55°C
-25° to +70° C
IP20
Check US distributor inventory
Accessory of
Part number
11084313
4251122198786
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 (11084313 MR-Multi I/O)
- 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).
