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ZL0103-0C

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Installation Guide

Power Monitoring

E50B1, E50C2, E50C3

E50C2 FDS

E50C3 L

E50xx REG.

R/W NV Format

Units

Scale

Range

Description

• 158

R/W NV UInt

0-10

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.

Warning: 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)

• 159

R/W NV UInt

Logging Configuration Register (Bit Mapped):
Bit 0: Clear to 0 for Continuous log buffer mode. Set to 1 for Single Shot logging mode. Default is 0 (Continuous).
Bit 1: Clear to 0 to enable Logging. Set to 1 to halt logging. Default is 0 (Log).

• 160

NV UInt

Logging Status Register (Bit Mapped):
Bit 0: Log buffer full – Set to 1 when one single shot mode has filled the log buffer. 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.

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 has 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.

• 161

NV UInt

0-32767

Log Buffer Wrap / Missed Log Counter. In continous mode, this counter increments each time the internal

circular log buffer wraps and overwrites old data. The total number of logged entries since the last log reset is:

(Register 161 x 5760) + Register 163. In single shot mode this counter is the number of log entries lost due to

the buffer being full. The counter is cleared on logging reset.

• 162

NV UInt

0-32767

Max Number of Logging Days. Based on the Sub-Interval Length and the depth of the log buffer, this register

shows the maximum number of days that data will be logged following a reset until the Buffer is full (Single