Problem with Modbus poll time

Hello,
I’m using OH2 with the Modbus “binding-modbus1 - 1.9.0” binding.
modbus.cfg file:

poll=200
serial.WSADAM.connection=/dev/ttyUSB0:38400:8:even:1:rtu:35:1500:none:none
serial.WSADAM.type=coil
serial.WSADAM.id=1
serial.WSADAM.length=8

serial.WSADAM1.connection=/dev/ttyUSB0:38400:8:even:1:rtu:35:1500:none:none
serial.WSADAM1.type=discrete
serial.WSADAM1.id=1
serial.WSADAM1.length=8

Items:

Switch Mod_1					"Modbus-1"											{modbus="WSADAM:1"}
Switch Mod_2					"Modbus-2"											{modbus="WSADAM:2"}
Switch Mod_3					"Modbus-3"											{modbus="WSADAM:3"}
Switch Mod_4					"Modbus-4"											{modbus="WSADAM:4"}
Switch Mod_5					"Modbus-5"											{modbus="WSADAM:5"}
Switch Mod_6					"Modbus-6"											{modbus="WSADAM:6"}
Switch Mod_7					"Modbus-7"											{modbus="WSADAM:7"}
Switch Mod_8					"Modbus-8"											{modbus="WSADAM:0"}

Switch Mod_1i					"Modbus-1i"											{modbus="WSADAM1:1"}
Switch Mod_2i					"Modbus-2i"											{modbus="WSADAM1:2"}
Switch Mod_3i					"Modbus-3i"											{modbus="WSADAM1:3"}
Switch Mod_4i					"Modbus-4i"											{modbus="WSADAM1:4"}
Switch Mod_5i					"Modbus-5i"											{modbus="WSADAM1:5"}
Switch Mod_6i					"Modbus-6i"											{modbus="WSADAM1:6"}
Switch Mod_7i					"Modbus-7i"											{modbus="WSADAM1:7"}
Switch Mod_8i					"Modbus-8i"											{modbus="WSADAM1:0"}

The outputs on the Modbus slave switch immediately, no problems with this.
But the Inputs are very delayed, Openhab polls the Modbus slave only every ~9 seconds.
I try to lower down the poll=200 to 100 or 50 millis but without any changing.

What do I wrong?,
I using a FTDI to RS485 converter with Hardware flowControl on a RPI3.
(I can see the communication on the TX and RX LED’s)

I have fixed it by myself!
The Problem was a old Modbus TCP configuration, but it was not shown in the modbus.cfg.

I do this steps:
checked the log:tail
uninstall Modbus Binding via Paper UI>
open the Karaf Console> config:delete org.openhab.modbus
reboot the RPI >
install Modbus Binding again.

And now the poll time is related to the modbus.cfg file

Yes, this an issue with openhab2 https://github.com/openhab/openhab-distro/issues/396

Best
Sami