diff --git a/Setup-Computer-IOC-Server.md b/Setup-Computer-IOC-Server.md
index a4ee7e8..cd6f989 100644
--- a/Setup-Computer-IOC-Server.md
+++ b/Setup-Computer-IOC-Server.md
@@ -123,3 +123,25 @@ sudo cp ~/work/stxm/IOCServer/ethercat.conf /etc/ ## change MAC address
 
 
 ```
+
+- install epics gw
+```
+mkdir /usr/local/epics/extensions
+cd /usr/local/epics/extensions
+wget https://github.com/epics-extensions/ca-gateway/archive/refs/tags/v2.1.3.tar.gz
+tar xfv v2.1.3.tar.gz 
+git clone https://github.com/epics-modules/pcas.git
+cd pcas
+cd configure
+cp ~/work/stxm/IOCServer/RELEASE.local .
+cd ..
+make
+cd ../ca-gateway-2.1.3/configure/
+cp ~/work/stxm/IOCServer/RELEASE.local .
+# edit RELEASE to add:
+# PCAS=/usr/local/epics/extensions/pcas
+cd ../
+make
+
+
+```
\ No newline at end of file