Search found 1044 matches

by Steve001
Fri Mar 08, 2019 8:43 am
Forum: Flowcode V8
Topic: Help with modbus addressing-Solved
Replies: 26
Views: 4101

Re: Help with modbus addressing-Solved

there is a standard - I will put something together later for you

modbus was developed in 1979 by modicon for there PLC's and is widely utilised

have a look at Modbus.org

Steve
by Steve001
Thu Mar 07, 2019 9:30 pm
Forum: Flowcode V8
Topic: Help with modbus addressing-Solved
Replies: 26
Views: 4101

Re: Help with modbus addressing-Solved

HI Viktor

Maybe this will help

https://www.schneider-electric.co.uk/en/faqs/FA168406/

Steve
by Steve001
Thu Mar 07, 2019 1:44 pm
Forum: Flowcode V8
Topic: Help with modbus addressing-Solved
Replies: 26
Views: 4101

Re: Help with modbus addressing-Solved

Hi Viktor Modbus is perfectly at home in an electrically noisy environment I would loop in and out of each slave (maybe start at the top) depends if you going to add more sensors and which end you will add them. Start configurations don't work very well and may not even work at all if you wire at th...
by Steve001
Thu Mar 07, 2019 8:07 am
Forum: Flowcode V8
Topic: Help with modbus addressing-Solved
Replies: 26
Views: 4101

Re: Help with modbus addressing-Solved

Hi Victor

Glad it working for you now.

Noticed that your loop is wired incorrect though (unless it's how you have drawn it)

see attached

Steve
by Steve001
Wed Mar 06, 2019 10:23 pm
Forum: Flowcode V8
Topic: Help with modbus addressing-Solved
Replies: 26
Views: 4101

Re: Please help with modbus addressing

[quote="viktor_au"] Steve: have you tried reading N15 & N16 on there own Node 16 works alone fine. Master reads Node16, if the register address = 0 (40001). However if I use Node15 with register address = 0 (40001) than Node16 accepts the message and returns the message to Master, but the data is wr...
by Steve001
Wed Mar 06, 2019 10:21 pm
Forum: Flowcode V8
Topic: Help with modbus addressing-Solved
Replies: 26
Views: 4101

Re: Please help with modbus addressing

Hi Victor

if you are using this board for each slave then you will have two termination resistors fitted (R7)

can you remove one of them (or both and fit one externally ) ?

Steve
by Steve001
Wed Mar 06, 2019 10:19 pm
Forum: Flowcode V8
Topic: Help with modbus addressing-Solved
Replies: 26
Views: 4101

Re: Please help with modbus addressing

Hi Victor The Modbus slave(s) - can be many devices connected to the loop these have holding registers 40001,40002,4003 for example 40001 Temperature 40002 Humidity 40003 Barometer they also have an address 1 - 255 the master sends a request message to read a register from a slave device slave addr ...
by Steve001
Wed Mar 06, 2019 6:33 pm
Forum: Flowcode V8
Topic: Help with modbus addressing-Solved
Replies: 26
Views: 4101

Re: Please help with modbus addressing

Hi Victor To add to bens post When node N16 is connected, the node N15 goes into 'No Replay' mode. are the addresses / settings correct ? have you tried reading N15 & N16 on there own do you have a wiring error (A & B crossed) have you got the termination resistor installed do you have multiple resi...
by Steve001
Sat Feb 23, 2019 8:28 pm
Forum: Flowcode V8
Topic: Safe biometrics authentication
Replies: 7
Views: 1891

Re: Safe biometrics authentication

Hi Maybe a bit off topic slightly. Currently at work I have seen in the past couple of years, finger print scanners have gone away from turn styles to gain access these have been replaced by hand geometry scanners with a card that you present upto a reader - presume this is a RFID card. https://en.w...
by Steve001
Wed Jan 02, 2019 6:27 pm
Forum: General Programming
Topic: Eblocks - Splitter PCB
Replies: 2
Views: 1144

Re: Eblocks - Splitter PCB

Hi Leigh

Cheers

Steve
by Steve001
Wed Jan 02, 2019 1:54 pm
Forum: General Programming
Topic: Eblocks - Splitter PCB
Replies: 2
Views: 1144

Eblocks - Splitter PCB

Afternoon All, https://www.matrixtsl.com/webshop/e-blocks2-splitter-board.html Dose this PCB do what I think it dose as the schematic not that clear A port that connects to the programmer PCB (J1) 4 ports that are wired in parallel so you can connect 4 devices as long as you port the pins correctly ...
by Steve001
Sun Dec 23, 2018 5:18 pm
Forum: Programming Tips & Tricks
Topic: Using Tera Term (open source) as a colour LCD Display
Replies: 4
Views: 3037

Re: Using Tera Term (open source) as a colour LCD Display

cheers martin

Will have a go with this later
by Steve001
Sun Dec 23, 2018 4:56 pm
Forum: Flowcode V7
Topic: ECIO40P IOC
Replies: 3
Views: 1192

Re: ECIO40P IOC

Hi Martin, Hi Steve, >Have you post the correct flowchart? :oops: opps no I haven't, I think I have found my issue also gone back to think about it. the relay's react to a falling voltage level I have a couple of boards that I can plug in to the test rig so I have different readings. they are as is ...
by Steve001
Sun Dec 23, 2018 9:34 am
Forum: Flowcode V7
Topic: ECIO40P IOC
Replies: 3
Views: 1192

ECIO40P IOC

Morning All

Using IOC 0 & 1 on an ECIO40P, is there any gotcha's to be aware of?
On my ECIO sometimes didn't pic up the change of state

Program is a test rig that detects two relays changing state then records the voltage that the relay has changed

Steve
by Steve001
Sun Dec 23, 2018 9:09 am
Forum: Programming Tips & Tricks
Topic: Using Tera Term (open source) as a colour LCD Display
Replies: 4
Views: 3037

Re: Using Tera Term (open source) as a colour LCD Display

Thanks martin,
Going to have a go with this later

Got a diagnostics problem so will try and use this to see if I can see what is going on

Steve
by Steve001
Mon Dec 10, 2018 1:47 pm
Forum: 8-Bit PIC
Topic: pic controlling a relay
Replies: 23
Views: 5689

Re: pic controlling a relay

Hi Bob, Latching Relays usually require more current to energise / reset due to the fact they have more mechanical mass to move and this has to "Mechanically Latch" itself into position. If you increase the coil resistance, by placing a resistor in series you may find that the relay wont latch prope...
by Steve001
Tue Nov 13, 2018 8:05 am
Forum: Flowcode V5
Topic: How I can Hide "Mute" message
Replies: 5
Views: 2471

Re: How I can Hide "Mute" message

YSRAHMED How I can Attaching my projects FC File on Page ? Actually --- > this is my First attempt to make simple project using Flowcode . Hi Ysrahmed to add files to the forum post click the "Attachments" tab then Click the "Add files Button" a box opens then you select your file Please be aware c...
by Steve001
Sun Nov 11, 2018 8:08 pm
Forum: 8-Bit PIC
Topic: pic controlling a relay
Replies: 23
Views: 5689

Re: pic controlling a relay

Hi Bob ive now got hold of a couple of relays which have 167 ohm coil resistance but my problem still persists, ive also shortened the delay times in the program to try to make the switching quicker and there is a slight improvement but the relays are still killing my circuit what I would do next, 1...
by Steve001
Mon Oct 29, 2018 9:32 pm
Forum: 8-Bit PIC
Topic: pic controlling a relay
Replies: 23
Views: 5689

Re: pic controlling a relay

Hi Bob, just a suggestion have you seen these batteries - small and compact 12 V have used it in a project it also has a mate the A27 size similar to a AA. The A23 gave a reasonable service life in my project and I did have a 2 x 16 LCD Display powered. Although the A23 Ah is lower than the PP3 @ 30...
by Steve001
Mon Oct 29, 2018 9:45 am
Forum: 8-Bit PIC
Topic: pic controlling a relay
Replies: 23
Views: 5689

Re: pic controlling a relay

hi martin

:oops: yes your correct, habit using V2 / R - this gives you the power

Sorry for any confusion

Steve
by Steve001
Mon Oct 29, 2018 9:25 am
Forum: 8-Bit PIC
Topic: pic controlling a relay
Replies: 23
Views: 5689

Re: pic controlling a relay

Hi Bob Most of the breadboard PSU things from Ebay (I am presuming the ones that pick up the power supply rails at each end of the board with a DC jack in the centre or on one end) Most have a max current of around 250mA, there are some however rated at 500mA & 750mA if you dig around further howeve...
by Steve001
Fri Oct 12, 2018 12:56 pm
Forum: 8-Bit PIC
Topic: RESISTANCE METER
Replies: 30
Views: 6883

Re: RESISTANCE METER

Hi Bob, Can I add a slightly different approach .. have you tried a constant current generator ? - maybe set at 10ma and measure the voltage across the unknown device Then using ohms law 500 ohms would give you 5 volts. This dose also depend on your lower level of resistance too 100 ohms would give ...
by Steve001
Sun Oct 07, 2018 7:34 pm
Forum: Electronics products
Topic: RS485 Battery Stack and Common Ground
Replies: 13
Views: 5810

Re: RS485 Battery Stack and Common Ground

Hi George

I would look at these to isolate the battery voltage and prevent a back-feed through the micro and shorting out your batteries.
Its easy done and makes a mess !

https://uk.farnell.com/acpl-c87b-c87a-c ... oductRange

Steve
by Steve001
Fri Oct 05, 2018 1:00 pm
Forum: Programming Tips & Tricks
Topic: Working with Registers
Replies: 10
Views: 5637

Re: Working with Registers

Hi guys

Great post very informative, need to have another read through when I get more time
Have bookmarked it :D

Steve
by Steve001
Thu Oct 04, 2018 5:58 pm
Forum: General Programming
Topic: EMC Filter
Replies: 0
Views: 1171

EMC Filter

Evening All, I know not quite the place to ask but - you never know :mrgreen: Looking for a line choke / reactor for a centre tapped single phase supply (55 - 0 - 55) V AC to remove the 3rd and 5th harmonic from a switchmode power supply PSU 350W Measured a 12 amp 3rd harmonic the 5th was not fair b...