diff --git a/bundles/org.openhab.binding.ism8/src/main/java/org/openhab/binding/ism8/internal/Ism8Handler.java b/bundles/org.openhab.binding.ism8/src/main/java/org/openhab/binding/ism8/internal/Ism8Handler.java
index b36d857440b..53713712fd3 100644
--- a/bundles/org.openhab.binding.ism8/src/main/java/org/openhab/binding/ism8/internal/Ism8Handler.java
+++ b/bundles/org.openhab.binding.ism8/src/main/java/org/openhab/binding/ism8/internal/Ism8Handler.java
@@ -29,6 +29,7 @@ import org.openhab.core.thing.ChannelUID;
 import org.openhab.core.thing.Thing;
 import org.openhab.core.thing.ThingStatus;
 import org.openhab.core.thing.binding.BaseThingHandler;
+import org.openhab.core.thing.type.ChannelTypeUID;
 import org.openhab.core.types.Command;
 import org.openhab.core.types.RefreshType;
 import org.slf4j.Logger;
@@ -86,6 +87,14 @@ public class Ism8Handler extends BaseThingHandler implements IDataPointChangeLis
         if (command == RefreshType.REFRESH) {
             updateChannel(dataPoint);
         } else {
+            ChannelTypeUID channelType = channel.getChannelTypeUID();
+            if (channelType != null) {
+                if (channelType.getId().endsWith("-r")) {
+                    logger.warn("Ism8: channel {} of type {} is read-only, cannot send command", channelUID.getId(),
+                            channelType.toString());
+                    return;
+                }
+            }
             setDataPoint(dataPoint, command);
         }
     }
diff --git a/bundles/org.openhab.binding.ism8/src/main/resources/OH-INF/thing/thing-types.xml b/bundles/org.openhab.binding.ism8/src/main/resources/OH-INF/thing/thing-types.xml
index cb7d5b8603c..17471acee28 100644
--- a/bundles/org.openhab.binding.ism8/src/main/resources/OH-INF/thing/thing-types.xml
+++ b/bundles/org.openhab.binding.ism8/src/main/resources/OH-INF/thing/thing-types.xml
@@ -43,6 +43,7 @@
 		<item-type>Switch</item-type>
 		<label>Digital Readonly DataPoint</label>
 		<state readOnly="true"/>
+		<autoUpdatePolicy>veto</autoUpdatePolicy>
 		<config-description>
 			<parameter name="id" type="integer" required="true">
 				<label>DP ID</label>
@@ -65,6 +66,7 @@
 		<item-type>Number:Dimensionless</item-type>
 		<label>Percentage Readonly DataPoint</label>
 		<state readOnly="true"/>
+		<autoUpdatePolicy>veto</autoUpdatePolicy>
 		<config-description>
 			<parameter name="id" type="integer" required="true">
 				<label>DP ID</label>
@@ -102,6 +104,7 @@
 		<item-type>Number:Dimensionless</item-type>
 		<label>Numeric Readonly DataPoint</label>
 		<state readOnly="true"/>
+		<autoUpdatePolicy>veto</autoUpdatePolicy>
 		<config-description>
 			<parameter name="id" type="integer" required="true">
 				<label>DP ID</label>
@@ -122,6 +125,7 @@
 		<item-type>Number:Temperature</item-type>
 		<label>Temperature Readonly DataPoint</label>
 		<state readOnly="true"/>
+		<autoUpdatePolicy>veto</autoUpdatePolicy>
 		<config-description>
 			<parameter name="id" type="integer" required="true">
 				<label>DP ID</label>
@@ -162,6 +166,7 @@
 		<item-type>Number:Pressure</item-type>
 		<label>Pressure Readonly DataPoint</label>
 		<state readOnly="true"/>
+		<autoUpdatePolicy>veto</autoUpdatePolicy>
 		<config-description>
 			<parameter name="id" type="integer" required="true">
 				<label>DP ID</label>
@@ -181,6 +186,7 @@
 		<item-type>Number:Power</item-type>
 		<label>Power Readonly DataPoint</label>
 		<state readOnly="true"/>
+		<autoUpdatePolicy>veto</autoUpdatePolicy>
 		<config-description>
 			<parameter name="id" type="integer" required="true">
 				<label>DP ID</label>
@@ -200,6 +206,7 @@
 		<item-type>Number:VolumetricFlowRate</item-type>
 		<label>Flowrate Readonly DataPoint</label>
 		<state readOnly="true"/>
+		<autoUpdatePolicy>veto</autoUpdatePolicy>
 		<config-description>
 			<parameter name="id" type="integer" required="true">
 				<label>DP ID</label>
@@ -220,6 +227,7 @@
 		<item-type>Number:Energy</item-type>
 		<label>Active Energy Readonly DataPoint</label>
 		<state readOnly="true"/>
+		<autoUpdatePolicy>veto</autoUpdatePolicy>
 		<config-description>
 			<parameter name="id" type="integer" required="true">
 				<label>DP ID</label>
@@ -239,6 +247,8 @@
 	<channel-type id="mode-r">
 		<item-type>Number:Dimensionless</item-type>
 		<label>Mode Readonly DataPoint</label>
+		<state readOnly="true"/>
+		<autoUpdatePolicy>veto</autoUpdatePolicy>
 		<config-description>
 			<parameter name="id" type="integer" required="true">
 				<label>DP ID</label>