# Modbus TCP, Pokeys57E and DS18B20 **URL:** \ **Category:** Bindings\ **Created:** [August 30, 2017, 6:20am UTC](https://community.openhab.org/t/modbus-tcp-pokeys57e-and-ds18b20/33749 "2017-08-30T06:20:18Z")\ **Posts on this page:** 1\ **Showing post:** 6
**Author:** ![sjief](https://community.openhab.org/letter_avatar_proxy/v4/letter/s/d78d45/32.png) [@sjief](https://community.openhab.org/u/sjief)\ **Post date:** [August 30, 2017, 11:01am UTC](https://community.openhab.org/t/modbus-tcp-pokeys57e-and-ds18b20/33749/6 "2017-08-30T11:01:20Z")
Don’t know how to do that? Maybe this has someting to do with it: > [@Modbus RTU Drexel & Weiss \<\> openHAB](https://community.openhab.org/t/modbus-rtu-drexel-weiss-openhab/22379/64): > > From the binding WIKI Note: The way Decimal commands are handled currently means that it is probably not useful to try to use Decimal commands with non-16bit valuetypes. You cannot simply write 32-bit at present. We’ll have to try to hack it with two 16-bit Items. It gets complicated because of the sign. This is untested - modbus.cfg to deal with this register pair as 16-bits, important note - Unsigned writemultipleregisters = true ... serial.slave3.type=holding serial.slave3.start=5016… --- _[View the full topic](https://community.openhab.org/t/modbus-tcp-pokeys57e-and-ds18b20/33749)._