1. ALARM_A: Ethernet Global Data

Each system wide PPS function block broadcasts a portion of its instance data onto the Ethernet global data highway. This data is used to interface with the function block from an HMI station in order to monitor and control a process system.

The Ethernet global data for the PPS ALARM_A block is as follows.

Global Data	Data Type	Description
AS [0]	DWORD	Alarm State Information
AS [1]	DWORD	Alarm State Information
		Timestamp		The number of seconds since 1-1-1970
RS [0]	DWORD	Rate of Change Alarm State Information
RS [1]	DWORD	Rate of Change Alarm State
		Timestamp		The number of seconds since 1-1-1970
FC	UINT	Faceplate Command
		1	Acknowledge Absolute Alarm
		2	Acknowledge Rate of Change Alarm
		9	Suppress Alarm State LL
		10	Suppress Alarm State L
		11	Suppress Alarm State H
		12	Suppress Alarm State HH
		13	Suppress Alarm State -ROC
		14	Suppress Alarm State +ROC
		22	Deactivate Alarm Suppression on State LL
		23	Deactivate Alarm Suppression on State L
		24	Deactivate Alarm Suppression on State H
		25	Deactivate Alarm Suppression on State HH
		26	Deactivate Alarm Suppression on State -ROC
		27	Deactivate Alarm Suppression on State +ROC
ST	WORD	HMI Status Word
PI	REAL	Current Value of Process Variable
LS [0]	REAL	LL Setpoint
LS [1]	REAL	L Setpoint
LS [2]	REAL	H Setpoint
LS [3]	REAL	HH Setpoint
LS [4]	REAL	ROC Setpoint