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HVAC and Pumping Forum

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HVAC and Pumping Forum

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BZ
BZ Explorer

Virtual Training Calendar for Machine Automation

Hello everyone, We would like to highlight that there are some available seats for Virtual Classes in Q4 of Y2026 in our Machine Automation training team as below, come and join us!!! EcoStruxure ...
Industrial Automation icon_circle HVAC and Pumping Forum
1640 2 0

2024-01-25

Solved
obscuresc
obscuresc

M172 - SIZEOF on dereferenced @STRING does not return size of STRING

Hi, Using the SIZEOF function on a STRING pointer doesn't return the size of the STRING variable, see below. I am expecting that 'udiStringSize_pointer' would return 6. Note that sStringAlloc5 is ...
Industrial Automation icon_circle HVAC and Pumping Forum
357 0 3
Latest Reply: MargheritaM

Solved
obscuresc
obscuresc

TM172PDG18R - watchdog violations from unused local variable in Timed ...

Hi, I am able to reliably cause a watchdog violation in Timed task due to having a large unused local variable in a function. See function below. Spoiler (Highlight to read) FUNCTION stack_overflow...
Industrial Automation icon_circle HVAC and Pumping Forum
313 0 1
Latest Reply: FedericoM

Solved
KrzysztofSoczewka
KrzysztofSoczewka

Secure Interface Gateway - sending email

We tested the following code using Gmail SMTP. A 16-character Google App Password was generated and entered as Server_Password. However, the controller still does not send the email, function not retur...
Industrial Automation icon_circle HVAC and Pumping Forum
330 0 2
Latest Reply: KrzysztofSoczewka

Solved
KrzysztofSoczewka
KrzysztofSoczewka

Example usage of HTTPLib_POST (HTTPLib)

I'm using HTTPLib_POST (HTTPLib library, embedded target) to send a JSON body to an external HTTP API. Looking at the inputs, reqHeaders (STRING[2047]) accepts headers directly as a string, but there's...
Industrial Automation icon_circle HVAC and Pumping Forum
462 0 4
Latest Reply: FedericoM

Solved
tlindenblatt
tlindenblatt

PWM output of TM173OFM22S connection to fan

Hi, I want to control the PWM Input of a Papst 4154 N/2 H8P.According to the manual the PWM-Input is open collector and expects a frequency of 2...10 kHz. The fan has 4 wires:24VDCGNDPWMTacho I've conf...
Industrial Automation icon_circle HVAC and Pumping Forum
330 0 3
Latest Reply: FedericoM

Solved
obscuresc
obscuresc

M172 BIOS maintenance questions

Hi, I have a project for 668p14 and hardware running 668p13 BIOS. I'd like to avoid updating the BIOS as the PLC is in the field and I have an unstable connection to it. Is there compatibility issues...
Industrial Automation icon_circle HVAC and Pumping Forum
1380 0 4
Latest Reply: obscuresc

Solved
POPE3909
POPE3909

Upgrading a project from SoMachine HVAC to ESME HVAC

Hi Guys,I'm trying to upgrade an old project written in SoMachine/FreeStudio (I'm using Eliwell version in this case) to the ESME HVAC/ Free Studio Plus by following this video tutorial.https://youtu.b...
Industrial Automation icon_circle HVAC and Pumping Forum
309 0 1
Latest Reply: FedericoM

Solved
HuyDinh11
HuyDinh11

TM172PBG42RI: ERROR reading protection presence

I have some issue while using this TM172. When the program is clear, the program can download normally. But when I add some status variables, the download start to error like in the photo. What should ...
Industrial Automation icon_circle HVAC and Pumping Forum
802 0 8
Latest Reply: StevenCho

Solved
JeffBiser
JeffBiser Explorer

M172 Expansion Module Calibration

Hello everyone! We have a project with some existing M172 PLCs that all have a TM172E28R expander module attached. I've observed that several of the expander's AOs are not quite calibrated correctly....
Industrial Automation icon_circle HVAC and Pumping Forum
336 0 2
Latest Reply: JeffBiser

Solved
DavidTMO
DavidTMO

Can M172 read Bacnet MSTP and send the data via Ethernet (as converter...

i have a project that require a converter to read from VRV air conditioner BACnet MS/TP in a highrise building. and send the status of the VRV using BACnet IP. can we used M172 to solve this? David...
Industrial Automation icon_circle HVAC and Pumping Forum
558 0 4
Latest Reply: Engineertmo

Solved
KrzysztofSoczewka
KrzysztofSoczewka

M172 BACnet Communication with Other Controllers Example Needed

Hi, I’m looking for a simple working example of BACnet communication from a Schneider Electric M172 (28–42 I/Os) to another BACnet device (any third-party controller), especially writing values (WriteP...
Industrial Automation icon_circle HVAC and Pumping Forum
628 0 3
Latest Reply: MargheritaM

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