diff --git a/config/devices.properties b/config/devices.properties
index bb8f3a1..f0b51f6 100644
--- a/config/devices.properties
+++ b/config/devices.properties
@@ -1,4 +1,4 @@
 robot=RobotTcp|127.0.0.1:1000|||
 $robot_modbus=RobotModbus|127.0.0.1:502|||
-dewar=ch.psi.pshell.modbus.ModbusTCP|127.0.0.1|||
+dewar=ch.psi.pshell.modbus.ModbusTCP|PC12288:502|||
 $temperature=ch.psi.pshell.modbus.AnalogInput|dewar 0|||