# ARDUINO MKR 485 SHIELD

**URL:** <https://forum.arduino.cc/t/arduino-mkr-485-shield/645478>\
**Category:** MKR Shields\
**Created:** [March 30, 2020, 6:41pm UTC](https://forum.arduino.cc/t/arduino-mkr-485-shield/645478 "2020-03-30T18:41:08Z")\
**Posts on this page:** 4\
**Page:** 1

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**Author:** ![joyce10](https://dub1.discourse-cdn.com/arduino/user_avatar/forum.arduino.cc/joyce10/32/241082_2.png) [@joyce10](https://forum.arduino.cc/u/joyce10)\
**Post date:** [March 30, 2020, 6:41pm UTC](https://forum.arduino.cc/t/arduino-mkr-485-shield/645478/1 "2020-03-30T18:41:08Z")

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Does anyone know how to wire this shield? how to set the switches.  
what does this mean?

- MKR board
- MKR 485 shield
- ISO GND connected to GND of the Modbus RTU server
- Y connected to A/Y of the Modbus RTU client
- Z connected to B/Z of the Modbus RTU client
- Jumper positions
- FULL set to OFF
- Z // Y set to OFF

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**Author:** ![pert](https://dub1.discourse-cdn.com/arduino/user_avatar/forum.arduino.cc/pert/32/217111_2.png) [@pert](https://forum.arduino.cc/u/pert)\
**Post date:** [March 31, 2020, 12:31am UTC](https://forum.arduino.cc/t/arduino-mkr-485-shield/645478/2 "2020-03-31T00:31:29Z")

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> joyce10:
> 
> - MKR board

You can use the Arduino MKR 485 Shield with any of the MKR series of Arduino boards:

- [MKR1000](https://store.arduino.cc/arduino-mkr1000-wifi)
- [MKR Zero](https://store.arduino.cc/arduino-mkr-zero-i2s-bus-sd-for-sound-music-digital-audio-data)
- [MKR WiFi 1010](https://store.arduino.cc/arduino-mkr-wifi-1010)
- [MKR Fox 1200](https://store.arduino.cc/arduino-mkr-fox-1200-1408)
- [MKR WAN 1300/1310](https://store.arduino.cc/mkr-wan-1310)
- [MKR GSM 1400](https://store.arduino.cc/arduino-mkr-gsm-1400-1415)
- [MKR NB 1500](https://store.arduino.cc/arduino-mkr-nb-1500-1413)

You can plug your shield right in to the top of the MKR Board and all the necessary connections between the board and the shield will be made for you.

> joyce10:
> 
> - ISO GND connected to GND of the Modbus RTU server
> - Y connected to A/Y of the Modbus RTU client
> - Z connected to B/Z of the Modbus RTU client

On the MKR 485 Shield, there is a green screw terminal block. There are labels printed on the shield's PCB that identify each terminal. They are a little hard to read because the green terminal block partially covers them. So you need to connect wires from the terminals labeled "ISO GND", "Y", and "Z" on the MKR 485 shield to the connectors marked "GND", "A"/"Y", and "B"/"Z" on the device used as the Modbus RTU client.

> joyce10:
> 
> - FULL set to OFF

There is a switch on the MKR 485 Shield that is labeled "HALF" on one side and "FULL" on the other side. You should move the switch to the "HALF" position.

> joyce10:
> 
> - Z // Y set to OFF

There is a switch on the MKR 485 Shield that is labeled "Z // Y" on one side and "//" with a line drawn through it on the other side. You should move the switch to the "//" with a line drawn through it side.

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**Author:** ![Juraj](https://dub1.discourse-cdn.com/arduino/user_avatar/forum.arduino.cc/juraj/32/238785_2.png) [@Juraj](https://forum.arduino.cc/u/Juraj)\
**Post date:** [March 31, 2020, 5:03am UTC](https://forum.arduino.cc/t/arduino-mkr-485-shield/645478/3 "2020-03-31T05:03:10Z")

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![](https://europe1.discourse-cdn.com/arduino/original/4X/c/0/6/c06e4cee6f3a987ab3bff37f2c989a13d2734d66.jpeg)

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**Author:** ![system](https://dub1.discourse-cdn.com/arduino/user_avatar/forum.arduino.cc/system/32/1140315_2.png) [@system](https://forum.arduino.cc/u/system)\
**Post date:** [May 7, 2021, 11:57am UTC](https://forum.arduino.cc/t/arduino-mkr-485-shield/645478/4 "2021-05-07T11:57:52Z")

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