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Topics - acxysty

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1
Technical support / TCP-IP and ID goes to 0xFF
« on: April 13, 2022, 07:29:47 AM »
Dear All
We are a FMD-88 in a larger electronic device to exchange modbus information by RS232 and RS485.
From time to time  we are losing  TCP-IP and ID communication parameters on a power-down/power-up sequence. Typically an emergency stop sequence.
As it happens rarely, it is difficult to understand the reason behind that.
We can recover the FMD using TLServer over RS232 to retrieve a "new" ID, to re-configure / re-connect again by TCP-IP
What could be the reason of that ?
Does this has to do with eeprom ?
Thank in advance for your ideas and support.
Regards
Thierry

2
Technical support / PWM and STEPMODE
« on: February 02, 2022, 07:27:08 AM »
Dear all
We are trying to use both PWM and STEPMODE mode in the same program in order to drive a motor in one way or in another, the motor being wired on a single output.
We achieve easily both mode but we are facing some issues when changing from one mode to the other mode.
Shifting STEPMODE  -> PWM mode works fine
Shifting PWM mode ->  STEPMODE does not work.

At the end of the PWM mode we use instruction SETPMW ch,0,0 on order to stop the motor, followed by  new STEPSEED + SETPMOVE instrictions but the output does deliver any signal...

It looks like the SETPWM mode cannot be overwrite ?
Any suggestions
Thank you in advance
Regards
Thierry

3
Technical support / Changing STEPSPEED
« on: October 13, 2019, 01:36:30 AM »
I want to increase/decrease slowly the PPS of a stepper motor without going through acceleration/decceleration phases from/to 0. Is that possible using the STEPSPEED command ?

In different topics it is said that it is possible to modify the PPS of a stepper motor using the STEPSPEED command providing this is not done during the acceleration or decelarration phases.

By doing so is the PPS be varied 'level' by level with going down to 0 each time?

Thank you in advance

Regards

Thierry


4
Technical support / OUTCOM issue ?
« on: November 22, 2016, 09:02:17 AM »
We have make a strange observation.
We are using the following program :
DM[141] = &H03     ' node address of slave
DM[142] = &H03     ' function 03
DM[143] = &H00    
' upper 8 bit of address
DM[144] = &H01
' lower 8 bit of address
DM[145] = &H00      
' upper 8 bit of count
DM[146] = &H01   ' lower 8 bit of count
DM[147] = &HD4
DM[148] = &H28

FOR I = 1 to 8          ' send out the MODBUS RTU command in binary
OUTCOMM 1, DM[140+I]
NEXT
DELAY(25)  
' delay for a while to wait for response

FOR I = 1 to 8         ' get rest of response
DM[150+I] = INCOMM (1)
NEXT


We monitore the transmission with a network analyser and we observe that sometimes the latest byte transmitted is NOT 28 as it should be ! All the previous bytes are OK.
Any  ideas where to look at ? Do we need to had a delay after every OUTCOM command ?

Regards

Thierry

5
Technical support / Priority issues TCP and RS485
« on: November 17, 2016, 07:17:05 AM »
Dear all
We are using Nano (great board) at its full capilities, working with both connections TCP (server) and RS port (Master).
Sometimes we have RS response that are not properly handled and we wonder whether this could arised from interrupt priority linked with TCP ?
Thank you in advance
Regards
Thierry

6
Technical support / Lowest frequency measured by Nano
« on: September 10, 2015, 09:07:58 AM »
Dear All

We need to monitor a sensor generating a low frequency signal ( 5 to 50 Hz).
Is it within the range of PULSEFREQUENCY function or is it too low ?

Regards

Thierry

7
Frequently Asked Questions / Nano Client over few servers
« on: May 07, 2014, 12:26:30 AM »
Dear all

We are using Nano as client Modbus/TCP and we would like to communicate with several servers without opening and closing the sockets.
Is there a way to do that ?
Regards
TY

8
Technical support / IRQ ; How it works ?
« on: March 19, 2014, 04:27:03 AM »
Hello Tri PLC
We have some difficulties in understanding how IRQ works on Nanos and FMD. We know how IRQ work on a micro-controler. But it looks rather different on your products. Could you give us some more information on this subject ?
Regards
TY

9
Technical support / TCP server
« on: March 13, 2014, 09:32:21 AM »
We have an application that need to manage the Mobus TCP server : sometimes it has to be ready to be open and sometimes it has to be closed without going out of the runing program.
How can we manage that ?
Regards

10
Technical support / How to limit the memory access
« on: March 13, 2014, 05:21:40 AM »
Dear All

We are extensively using Nano and FMD in our systems. We are very happy with them.

We usually communicate with MODBUS over TCP with external devices and it works fine. But this protocol gives an acces to the whole memory space.

Is there a way to limit the memory access by MODBUS overTCP  to a limited memory space eg DM 1 to DN100.

Regards

TYS


11
Technical support / How can I download Trilogy ?
« on: February 04, 2014, 07:08:16 AM »
Hello
We are regular customer for Nanos and FMDs PLC and registered user.
I would like to down the software from your website. How should I proceed ?
Regards
Thierry

12
Frequently Asked Questions / PID FMD 88-10
« on: January 25, 2014, 11:17:44 AM »
Hi,

My system is as follows, I have two gas lines with on each line a proportional valve and a pressure sensor.

At first I opened my first proportional valve with setPWM function.

I'd like to do a pressure regulator to compensate the pressure that I have on the first line of gas by opening my second line to have a delta of zero pressure.

For this I use the PID function with the FMD 88-10 and a PWM to manage the opening and closing of each of my proportional valves.

My problem is that I don't know how the PID on FMD works including the PIDcompute function.

Can you help me?

Thanks

13
Technical support / Communication RS 232
« on: April 22, 2013, 03:19:17 AM »
Hello,
I would like to communicate via the RS 232 between FMD88-10 and a masflow that communicates RS-232.
I try to send a string of such "070304716271620E" then Carriage Return and Line Feed.
I configured the same way the two products are: 1 start bit, 8 data bits, no parity and 1 stop bit.

My program:

in FirstScan
SETPROTOCOL 1.10
SETBAUD 1, & H06

then:

PRINT # 1 "070304716271620E" &H0D; &H0A;
FOR I = 1 to 10000
A $ = INPUT $ (1)
NEXT

By sending the same through the hyperterminal with my PC running Windows XP it worked! Can you help me this is quite urgent.
thank you

14
Technical support / Nano as client LabView as server
« on: February 15, 2012, 01:35:24 PM »
Dear all
We are trying to run an application where Nano will be a client and a PC/Labview will be a server under TCP/IP MOBDUS protocole.

We are facing the following situation:
Nano adress the right frames at the PC (adresss:502) and the PC reads them OK. PC return is right adress of the Nano but a un-expected port number (57266). Our understanding is that this is the port used by the Nano to send the data and it becomes also the port towards which the PC want to send the respond frame. This port is not 502 but this may be OK as Nano is client ?
How can we read the 57266 port ?
Regards
Thietrry

15
Technical support / Write in input 1 in Nano 10
« on: December 16, 2011, 01:37:30 AM »
Hi

We are not sure that we have well understood the mapping adress syntax with Nano 10

Here is our problem :

We want to write a 1 in input#1 using Modbus TCPIP protocol.

For that we intent to use MB function 05 (Force I/O bit). Then we need to specify the adress : 0x9C41 (for 40001 Is that right ?) and the value OxFF00.

How can we be sure that bit 1 only of Input [1] will modify ? How about to modify input#2 ?

Thank you in advance for your help/support

Thierry

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