# Modbus write single Register use function 16

**URL:** <https://forum.inductiveautomation.com/t/modbus-write-single-register-use-function-16/9571>\
**Category:** Archived Topics\
**Created:** [January 20, 2015, 7:20am UTC](https://forum.inductiveautomation.com/t/modbus-write-single-register-use-function-16/9571 "2015-01-20T07:20:49Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![efimov](https://avatars.discourse-cdn.com/v4/letter/e/ecccb3/32.png) [@efimov](https://forum.inductiveautomation.com/u/efimov)\
**Post date:** [January 20, 2015, 7:20am UTC](https://forum.inductiveautomation.com/t/modbus-write-single-register-use-function-16/9571/1 "2015-01-20T07:20:49Z")

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Hello guys!!!  
I want connect FLIR IR CAM use modbus driver.  
connecting is fine, but some problem when recording a Holding register (int16).  
“In device manual written:  
Only these Modbus Function Codes are supported:  
o 4 Read Holding Registers  
o 16 Write Multiple Holding Registers  
o 23 Read/ Write Multiple Holding Registers”

Ignition while write Holding register (int16) using function code modbus - 06 (Write Single Registry).  
It is possible to make that Ignition for write Holding register (int16) using function code modbus - 16 (Write Multiple Holding Registers)

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**Author:** ![Kevin.Herron](https://sea1.discourse-cdn.com/inductiveautomation/user_avatar/forum.inductiveautomation.com/kevin.herron/32/7259_2.png) [@Kevin.Herron](https://forum.inductiveautomation.com/u/Kevin.Herron)\
**Post date:** [January 20, 2015, 3:31pm UTC](https://forum.inductiveautomation.com/t/modbus-write-single-register-use-function-16/9571/2 "2015-01-20T15:31:53Z")

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This isn’t possible when writing to a single register, but we have it in both our ticket and feature request system. I don’t think it will be very difficult to implement, so perhaps we can get it into the next 7.7 release candidate.