Index: leahi_dialin/fp/filtration_purification.py
===================================================================
diff -u -rb3774ad1df35c613de1c09bef40a55eb0ce4af36 -rf5ff90469cd1520361a823923ad0b58ab4a23a45
--- leahi_dialin/fp/filtration_purification.py	(.../filtration_purification.py)	(revision b3774ad1df35c613de1c09bef40a55eb0ce4af36)
+++ leahi_dialin/fp/filtration_purification.py	(.../filtration_purification.py)	(revision f5ff90469cd1520361a823923ad0b58ab4a23a45)
@@ -16,6 +16,7 @@
 import struct
 
 from .modules.conductivity_sensors import FPConductivitySensors
+from .modules.constants import NO_RESET, RESET
 from .modules.flow_sensors import FPFlowSensors
 from .modules.levels import FPLevels
 from .modules.pressure_sensors import FPPressureSensors
@@ -254,4 +255,47 @@
         self.logger.debug("Sent request to FP to reset...")
         self.fp_set_logged_in_status(False)
 
+    def cmd_op_mode_broadcast_interval_override(self, ms: int, reset: int = NO_RESET) -> int:
+        """
+        Constructs and sends the measured op mode broadcast interval override command
+        Constraints:
+            Must be logged into FP.
+            Given interval must be non-zero and a multiple of the FP general task interval (50 ms).
 
+        @param ms:  integer - interval (in ms) to override with
+        @param reset:  integer - 1 to reset a previous override, 0 to override
+        @return: 1 if successful, zero otherwise
+        """
+
+        if not check_broadcast_interval_override_ms(ms):
+            return False
+
+        rst = integer_to_bytearray(reset)
+        mis = integer_to_bytearray(ms)
+        payload = rst + mis
+
+        message = DenaliMessage.build_message(channel_id=DenaliChannels.dialin_to_fp_ch_id,
+                                              message_id=MsgIds.MSG_ID_RO_OPERATION_MODE_PUBLISH_INTERVAL_OVERRIDE_REQUEST.value,
+                                              payload=payload)
+
+        self.logger.debug("override op mode broadcast interval")
+
+        # Send message
+        received_message = self.can_interface.send(message)
+
+        # If there is content...
+        if received_message is not None:
+            # self.logger.debug(received_message)
+            if reset == RESET:
+                str_res = "reset back to normal: "
+            else:
+                str_res = str(ms) + " ms: "
+            self.logger.debug("operation mode broadcast interval overridden to " + str_res +
+                              str(received_message['message'][DenaliMessage.PAYLOAD_START_INDEX]))
+            # response payload is OK or not OK
+            return received_message['message'][DenaliMessage.PAYLOAD_START_INDEX]
+        else:
+            self.logger.debug("Timeout!!!!")
+            return False
+
+