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3. Connectors

3.1. Antenna

The cable for connecting the antenna is fitted with an N type connector. Use a connector of the corresponding type and impedance as its mate. We recommend using an RG213 cable for aerial leads up to 25 m in length and a H1000 for longer leads.


CAUTION. The radio modem cannot be connected to the power supply without the antenna connected (or corresponding artificial load). Otherwise this could lead to damage to the radio part of the modem.

The MC100 controller does not have a radio part – it does not use a radio channel for communication which is why it doesn’t have an antenna.

3.2. Serial Interface

The router can be equipped with serial ports RS232 or RS422/485, the ports can be optical isolated. According to the configuration it is possible to use a terminal block or DSUB 9 (Canon) connectors for connecting data cables via the serial interface. See Chapter Dimensional Diagram and Labeling. Data rate on the serial interface can be from 200 bps to 230,400 bps.

3.2.1. RS232, RS422 and RS485 Connectors

a) Table of data connector RS232 connections

RS232 DSUB9 female

Fig. 3.1: RS232 DSUB9 female

Tab. 3.1: Table of data connector RS232 connections

RS232 signalScrew terminalsDSUB9F pin
CD 1
RI 9

b) Table of data connector RS422 connections

Tab. 3.2: Table of data connector RS422 connections

RS422 signalScrew terminalsDSUB9F pin

c) Connection diagram of data cable RS485

When you are connecting RS485, your “A” has to be connected to TxD+ and RxD+ simultaneously and “B” to TxD- and RxD- simultaneosly.

Data cable RS485 connections

Fig. 3.2: Data cable RS485 connections

Note – For data connector RS485 connection see Table of data connector RS422 connections.

Important – For making data cables for connecting the user´s terminal equipment to the serial port we recommend using a shielded cable, particularly in an industrial environment, and connecting the shielding to GND (pin No. 5). When using a multi-core cable all free conductors should be connected to pin No. 5. In the case of a galvanically separate port for RS485 (RS422) only ground one side of the data cable. We recommend using only the necessary minimum length for data cables.

3.2.2. Distinguishing Data Modules by Colour

For RS232 RxD is the output from the router (approx. -6V when inactive) and TxD is the input to the router (according to the RS 232 standard). Hardware versions of the interface can be distinguished according to the colours of LED diodes next to the connector.

Tab. 3.3: Table for distinguishing LEDs for RxD and TxD by colour

Type of interfaceColour (RxD / TxD)
RS232red / green
RS232 opt. separatedorange / green
RS422/485 opt. separatedorange / yellow

3.2.3. Labelling of SCC terminals

Labelling of serial interface terminals

Fig. 3.3: Labelling of serial interface terminals

The SCC ports of the router are DCE type devices. Based on standards the receiver terminal RxD of the connected DTE device is connected to the transmitting terminal of the router’s SCC port which is also labelled RxD. Similarly the red LED indicating transmission from SCC is labelled RxD.

3.3. Ethernet

  • Connector RJ-45 for Ethernet 10BaseT and 100BaseT corresponds to the EIA TIA T568B standard.

  • Informative LED diodes indicate:

    • Tx – yellow – output or input active (*Tx – red – output from ETH channel)

    • Rx – yellow – output or input active (*Rx – green – input to ETH channel


      Green LED Tx and yellow LED Rx flash simultaneuosly. The informations marked (*) are valid for hw version produced until 07/2008.

    • 100 – yellow – if lit the 100Base-TX net is indicated otherwise is 10Base-T

    • LINK – green – indicates correctly connected link

    • F.D. – green – indicates full duplex operation

  • The direct cable serves for connecting to the Ethernet network via the hub (repeater) or switch-hub (router).

  • A crossed cable serves for connecting only two devices – MR400-MC100, MR400-PC, etc.

The ETH module consumption is 30 mA (60 mA until 07/2008).

The following table contains connector connections and colours of conductors. For the crossed cable the order of conductors on one side is the same as for the direct cable.


Fig. 3.4: RJ-45F

Tab. 3.4: Table of Ethernet to cable connector connections

PINSignalDirect cableCrossed cable
1TX+white – orangewhite – green
3RX+white – greenwhite – orange
5white – bluewhite – blue
7white – brownwhite – brown

3.4. Analog and Digital Inputs and Outputs

The module of analog and digital inputs and outputs (ADIO) is designed for :

  • creating 20 mA current loops

  • switching loads supplied with DC and AC current

  • scanning digital signals

Each functional group of terminals is galvanically separated from the rest of the device as shown on the internal layout diagram for the ADIO module on the image below:

Wiring diagrams for analog and digital inputs and outputs

Fig. 3.5: Wiring diagrams for analog and digital inputs and outputs

3.4.1. Labelling

Individual terminals of terminal blocks are labelled:

Connector A OUT

– analog outputs

Connector A IN

– analog inputs

Connector D OUT

– digital outputs

Connector D IN

– digital inputs

Terminal UP

this clamps pair is not used

Description of analog and digital inputs and outputs

Fig. 3.6: Description of analog and digital inputs and outputs

3.4.2. Parameters

Tab. 3.5: Table of digital and analog input and output parameters

2 × optically separated

digital output
– bipolar SSR switch design
– voltage for supplying load max. 30 V DC, 24 V AC
– switched current typically 300 mAresistance in on state max. 1 Ω
– protection against current overload in on state
– protection against overvoltage in off state

2 × optically separated

digital input
– passive optical element design
– input voltage 0–2,3 V will be evaluated as log. 0
– input voltage 2–30 V will be evaluated as log. 1
– max. value of input voltage 30 V

2 × optically separated

analog output
– current source 4–20 mA
– load resistance max. 250 Ω
– settings accuracy better than 0.1 %

2 × optically separated

analog input
– sensitivity 0–20 mA (or after sw configuration 4–20 mA)
– accuracy of measured values better than 0.1 %
– input resistance 60 Ω
– no protection against current overload
– max. value of input current 50 mA

Analog inputs 0 and 1 have (minus) terminals connected and galvan. separated from router GND.

Analog outputs 0 and 1 have (minus) terminals connected and galvan. separated from router GND.

Examples of wiring analog inputs and outputs

The MORSE router used in the diagram showing examples of wiring can, of course, be replaced by any MORSE system equipment (e.g. MD160, MX 160, MWxxx, MRxxx, MC100, MG100i, …)

Fig. 3.7: Examples of wiring analog inputs and outputs

3.5. Supply Connector

Terminals of this connector are labelled in the standard manner. Only DC voltage in the range from 10.8 to 15.6 V can be connected. Connecting higher voltage may damage the radio modem.

Terminal PI (power indicator) – if the radio modem is fed from the MS2000 power supply information about supply method from source clamp MAIN PWR OFF can be lead:

Power connector & information LED

Fig. 3.8: Power connector & information LED

  • level TTL1 or unconnected clamp – network supply

  • level TTL0 or grounded clamp – battery supply

Maximal supply cable length is 3 m.

3.6. Service Connector

The service connector RJ-12 serves for short-term connections of the service cable during local adjustment of MORSE router parameters. Upon attaching the connector (connecting to the RS232 link (RxD,TxD, GND)) the router automatically switches to service mode and the module slot 1 disconnects. Slots numbering see section Section 3.7, “View of Controller.

Service connector

Fig. 3.9: Service connector

Tab. 3.6: Table of service connector connections

1AF_OUToutput of modulation from RF part of router
2SER_RxDRS232 RxD output from router
3SER_TxDRS232 TxD input to router
4MOD_BSBinput modulation to radio part of router
6PTTkeying of TX carrier waves for service purposes

Be careful, RJ-12 pin numbering is not standardized.

Service cable connector connections

Fig. 3.10: Service cable connector connections


ATTENTION! The service mode is not suitable for normal operation

3.7. View of Controller

The only difference in appearance between the controller and the radio modem is the type designation badge and the absence of an antenna connector – see the following image.

View of radio modem — description of connectors, model with DSUB (Canon) connectors and with terminals, numbering of slots

Fig. 3.11: View of radio modem — description of connectors, model with DSUB (Canon) connectors and with terminals, numbering of slots

See the table of technical parameters for the options available for occupying individual slots with various modules.

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