Schneider Electric EM3555 manual Logging Configuration and Status, Lsb

EM3555	ZL0093-0A
Modbus Point Map	11/2011

REGISTER	R/W	NV	Format	Units	Scale	Range
149	R/W	NV	UInt			1-6
150	R/W	NV	UInt	Seconds		0, 10-32767
151	R/W		UInt			1-32767
152	R	NV	UInt			0-32767
153	R	NV	UInt			0-32767
154	R		UInt

Description

Number of Sub-Intervals per Demand Interval. Sets the number of sub-intervals
that make a single demand interval. For block demand, set this to 1. Default is
1. When sub-interval length register #150 is set to 0 (sync-to-comms mode), this	Demand
register is ignored.
	Calculation

Sub-Interval Length in seconds. For sync-to-comms, set this to 0 and use the reset register (129) to externally re-start the sub-interval. This is also the logging interval.

Reserved (returns 0)

Power Up Counter

Output Configuration. EM3555 units have a N.O. energy contact and N.C. (Form B) phase loss contact, so this register will always return a “0”.

Reserved (returns 0)

Logging Configuration and Status

						Most Significant Byte (MSB)	Least Significant Byte
155	R/W	NV	UInt	Day /	See Bytes		(LSB)
				Month		Day 1-31 (0x01-0x1F)	Month 1-12	Date / Time Clock. Following a power cycle, resets
							(0x01-0x0C)	to:
								Day 01	Month	01
				Hour /			Year 0-199
156	R/W	NV	UInt		See Bytes	Hour 0-23 (0x00-0x17)		Hour 00	Year	(20) 00
				Year			(0x00-0xC7)
				Seconds			Minutes 0-59
157	R/W	NV	UInt	/	See Bytes	Seconds 0-59 (0x00-0x3B)
							(0x00-0x3B)
				Minutes
						Logging Read Page Register. Selects which of the register logs to read (see registers 169-178). 1-10
						are valid entries that put the meter into log reading mode, temporarily pausing logging. When set to 0
						(no variable selected for reading), normal logging resumes. The meter will buffer one set of log entries
						while in reading mode if a sub-interval timeout occurs (read/write collision). Default is 0.
158	R/W	NV	UInt		0-10	Note: this buffered data will be written to the log, and logging will resume on the following sub-interval
						timeout whether the page register has been cleared or not, resulting in the appearance of data moving
						in the buffer during reads. To avoid this, log buffer reads should be completed and this register set back
						to 0 in less time than the demand sub-interval (preferred) or logging should be halted by setting Bit 1 in
						register 158 (logs may be missed).
						Logging Configuration Register (Bit Mapped):
159	R/W	NV	UInt			Bit 0: Clear to 0 for circular log buffer mode. Set to 1 for single shot logging mode. Default is 0 (Circular).
						Bit 1: Clear to 0 to enable Logging. Set to 1 to halt logging. Default is 0 (Log).
						Logging Status Register (Bit Mapped):
						Bit 0: Log buffer full – Set to 1 when one single shot mode has filled the log buffer. In this condition,
						the Logged Entry Count will continue to increment. Cleared to 0 when logging is restarted (see reset
						command register 129).
						Bit 1: Log Buffer Read Collision 1 – Set to 1 if the meter tried to save log data while the user was
						reading the log (Logging Page Register has been set to something other than 0). On the first collision,
						the meter holds the data until the next sub-interval and then writes the saved data to the log as well as
						the data for that interval. This bit is cleared to 0 on the first demand interval with Logging Page Register
						= 0.
160	R	NV	UInt			Bit 2: Log Buffer Read Collision 2 – Set to 1 on the 2nd attempt to save log data while the user is
						reading the log (Logging Page Register is set to something other than 0). At this point the meter ignores
						the read condition and does a double write, first of the values saved from the previous cycle, and then
						the present values. If the read condition is not removed the meter continues to write the log data as it
						normally would. This bit is cleared to 0 on the first demand interval with Logging Page Register = 0.
						Bit 3: Logging Reset – The log has been reset during the previous demand sub-interval.
						Bit 4: Logging Interrupted – logging has been interrupted (power cycled, log configuration change, etc.)
						during the previous demand sub-interval.
						Bit 5: RTC Changed – The real time clock had been changed during the previous demand sub-interval.
						Bit 6: RTC Reset - The real time clock has been reset to the year 2000 and needs to be re-initialized.

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