diff --git a/tcbsd-provision-playbook.yaml b/tcbsd-provision-playbook.yaml
index 4f2c861..a58ef38 100644
--- a/tcbsd-provision-playbook.yaml
+++ b/tcbsd-provision-playbook.yaml
@@ -5,6 +5,18 @@
     - name: Verify connectivity with ping
       ansible.builtin.ping:
 
+    - name: Run PLC mode command
+      register: plc_mode
+      changed_when: false
+      ansible.builtin.command:
+        cmd: TcSysExe.exe --mode
+
+    - name: Assert that PLC is in CONFIG mode
+      ansible.builtin.assert:
+        that: "{{ 'CONFIG' in plc_mode.stdout }}"
+        fail_msg: "PLC is in RUN mode! Abort!"
+        quiet: true
+
     - name: Enable FreeBSD packages
       when: enable_freebsd_packages
       ansible.builtin.file: