EasyModbusTCP/UDP/RTU .NET / Discussion / General Discussion: .ReadDiscreteInputs doesn't always return the right value

.ReadDiscreteInputs doesn't always return the right value

Forum: General Discussion

Creator: Anonymous

Created: 2016-06-02

Updated: 2016-06-11

Comment has been marked as spam.
Undo

View and moderate all "General Discussion" comments posted by this user

Mark all as spam, and block user from posting to "Discussion"

Anonymous - 2016-06-02

Fabulous tool. However, I have an issue where reading a single discrete input does not always return the right value - particularly with register 8 for some reason. However, when I read the same register as part of a group, I get the right value.

Said another way...
.ReadDiscreteInputs(8,1) returns a boolean array containing a single incorrect value.
.ReadDiscreteInputs(0,16) returns a boolean arraywhere the 9th element (register 8) is correct.

I believe from my testing that when I ask for register 8, I am actually getting register 16! Maybe some sort of bit shifting error going on.

Thanks!

Fabulous tool. However, I have an issue where reading a single discrete input does not always return the right value - particularly with register 8 for some reason. However, when I read the same register as part of a group, I get the right value. Said another way... .ReadDiscreteInputs(8,1) returns a boolean array containing a single incorrect value. .ReadDiscreteInputs(0,16) returns a boolean arraywhere the 9th element (register 8) is correct. I believe from my testing that when I ask for register 8, I am actually getting register 16! Maybe some sort of bit shifting error going on. Thanks!

Add attachments
Cancel
You seem to have CSS turned off. Please don't fill out this field.

You seem to have CSS turned off. Please don't fill out this field.

New Attachment:

If you would like to refer to this comment somewhere else in this project, copy and paste the following link:
- Anonymous
  
  Add attachments
  Cancel
  You seem to have CSS turned off. Please don't fill out this field.
  
  You seem to have CSS turned off. Please don't fill out this field.
- Rossmann Engineering - 2016-06-11
  
  Hello, maybe you try the new Library.
  
  I tried it verious times to read Those registers, and it worked.
  
  If you would like to refer to this comment somewhere else in this project, copy and paste the following link:
  - Anonymous
    
    Add attachments
    Cancel
    You seem to have CSS turned off. Please don't fill out this field.
    
    You seem to have CSS turned off. Please don't fill out this field.

Anonymous

.ReadDiscreteInputs doesn't always return the right value

Modbus TCP, UDP and Modbus RTU client/server library

Forums

Help

.ReadDiscreteInputs doesn't always return the right value

.ReadDiscreteInputs doesn't always return the right value

Modbus TCP, UDP and Modbus RTU client/server library

Forums

Help

.ReadDiscreteInputs doesn't always return the right value document.SUBSCRIPTION_OPTIONS = { "thing": "topic", "subscribed": false, "url": "subscribe", "icon": { "css": "fa fa-envelope-o" } };

.ReadDiscreteInputs doesn't always return the right value