Adds tag and driver code for writing notes from POCloud to the PLC for display on the HMI

POCloud/advvfdipp.py

@@ -2,6 +2,33 @@
 import threading
 import time
 from device_base import deviceBase
+from pycomm.ab_comm.clx import Driver as plcDriver
+
+def write_string(addr, tag, to_send):
+    """
+    Writes a given string to the tag in a CLX PLC
+    """
+
+    data_name = ".".join((tag, "DATA"))
+    len_name = ".".join((tag, "LEN"))
+
+    # Begin by clearing out the entire array
+    clear = [0 for _ in range(0, 82)]
+    clx = plcDriver()
+    if clx.open(addr):
+        try:
+            clx.write_array(data_name, "SINT", clear)
+            clx.write_tag(len_name, 0, "DINT")
+
+            conv_string = [ord(x) for x in to_send[0:82]]
+            clx.write_array(data_name, "SINT", conv_string)
+            clx.write_tag(len_name, len(conv_string), "DINT")
+        except Exception as e:
+            print("Unable to write string {} to {}".format(to_send, tag))
+            return False
+        clx.close()
+        return True
+    return False
 
 
 class start(threading.Thread, deviceBase):
@@ -21,3 +48,8 @@ class start(threading.Thread, deviceBase):
 
     def run(self):
         pass
+
+    def advvfdipp_writenote(self, name, value):
+        note_tag_name = "POCloud_note"
+        plc_ip = "192.168.1.10"
+        return write_string(plc_ip, note_tag_name, value)