diff --git a/config/devices.properties b/config/devices.properties
index 7065165..703b1b8 100644
--- a/config/devices.properties
+++ b/config/devices.properties
@@ -1,5 +1,5 @@
 robot=RobotTcp|127.0.0.1:1000|||
-robot_modbus=RobotModbus|129.129.109.114:502|||
+robot_modbus=RobotModbus|129.129.109.114:502||1000|
 jf1=ch.psi.pshell.modbus.AnalogInput|robot_modbus 0|||
 jf2=ch.psi.pshell.modbus.AnalogInput|robot_modbus 1|||
 jf3=ch.psi.pshell.modbus.AnalogInput|robot_modbus 2|||