Skip to Content

Welcome!

This community is for professionals and enthusiasts of our products and services. Share and discuss the best content and new marketing ideas, build your professional profile and become a better marketer together.

Hide Intro Register
This question has been flagged
1 Reply
1707 Views
Avatar
Bart Reu

Hi,


i just recieved my first m-duino , seems impressive. Now i'm going trought the docs and sample codes to get my hardware se tup ready, but i have found out that Modbus and the GPRS/GSM module both seem to be using Serial1 . This PLC will have 2 Modbus sensors attached so i need a pretty constant connection to them. Is there a way to use both devices (modbus and the gsm)  ? The SMS will only be used incase an error or alarm occurs so i could pause the modbus reading and connect to the GSM module , just to send the SMS and then re-activate the Modbus. Am i seeing this the wrong way ?


Thanks allot 

Avatar
Discard
Avatar
Joan Vilardaga Castro
Best Answer

Hi Bart, ModbusRTU can go through Serial 1, RS-232 or RS-485. The GPRS module uses Serial 1 to communicate with the M-Duino. If you want to use ModbusRTU and GPRS at the same time, you have to use Modbus through RS-232 or RS-485.

You cannot "pause" Modbus to use GPRS, as they will interfere with each other anyways.

Avatar
Discard