MR-F-TP Modbus RTU

Description

The Modbus three-point module with 6 digital inputs, 2 two-level relay outputs and 2 digital outputs was developed for decentralized switching tasks. It is suitable for switching, for example, multi-level pumps and fans or louvers. In this case it is necessary to protect the relay contacts by appropriate load-dependent measures. The inputs and outputs can be switched and scanned by means of standard registers via a Modbus master. The input terminals 1 to 6 are wired with the C2 terminals on two poles to potential-free switches or contacts. The module has a manual control for the outputs. 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.

Connection with spring clamp terminal blocks (push-in)

Technical Data

General Data

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

100 mA (AC) / 40 mA (DC)

Relative duty cycle

100 %

Inputs

6 x digital contacts

Input / switching threshold

4.5 V DC

Outputs (relay)

2 x two-level

Output / switching voltage

250 V AC

Output / current

6 A / output

Outputs (digital)

2 NO contacts (DPST-NO) (photoMOS)

Output / switching voltage

40 V AC/DC

Output / current

100 mA

Display

Green, red and yellow LED

Dimensions (W x H x D)

50 x 69.3 x 60 mm

Weight

125 g

Operating temperature range

-5 °C to 55 °C

Storage temperature range

-20 °C to 70 °C

Ingress protection for housing / terminal blocks

IP40 / IP20

Check US distributor inventory

Accessories

Terminal block Type 259

Power supply NG4-F 24 V DC

USB/RS485 Converter

Typ 135 RIACON 135_3.5

Accessory of

MR-GW
Modbus RTU / Modbus TCP Gateway

MR-F-GW
Modbus RTU / Modbus TCP Gateway

Part number

Part number:

1108381370

EAN:

4251394620695

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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 switches) set correctly, must not occur twice or be 0.
- Bit rate and parity (rotary switches) set correctly, only possible in programming mode (see mounting note).
- Shielded and twisted pair cable used.
- Termination resistor (120 Ω) set on both sides.
- Bias resistors available on the BUS.
- Timeout high enough for all participants to respond (approx. 10 ms).

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 switches) set correctly, must not occur twice or be 0.
- Bit rate (rotary switches) set correctly, only possible in programming mode (see mounting note).
- Shielded and twisted pair cable used.
- Termination resistor (120 Ω) set on both sides.
- Bias resistors available on the BUS.
- Max Master as high as the number of physical master I/Os on the BUS.
- Max Frame high enough for all answers from participants to get through (BMT-RTR setting).

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