ZL0122-0D
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TM
E51C2A, E51C3A Installation Guide
E51C2A FDS
E51C3A L
og
Regist
er
R/W NV Format Units Scale
Range
Description
•
• 147
R
NV UInt
0-32767
Count of Energy Accumulator resets
•
• 148
R
UInt
Reserved (returns 0)
•
• 149
R/W NV UInt
1-6
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 register is ignored. Demand
Calculation
•
• 150
R/W NV UInt
Seconds
0, 10-32767
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. On the E51C3A, this is also the
logging interval.
•
• 151
R/W
UInt
1-32767
Reserved (returns 0)
•
• 152
R
NV UInt
0-32767
Power Up Counter.
•
• 153
R
NV UInt
0-32767
Output Configuration. E51CxA units have a N.O. energy contact and N.C. (Normally Closed - Form B) Phase
Loss contact, so this register always returns 0.
•
• 154
R
UInt
Reserved, returns 0
Logging Configuration and Status
• 155
R/W NV UInt
Day /
Month
See Bytes
Most Significant Byte (MSB) Least Significant Byte (LSB)
Date / Time Clock. Following a power cycle,
resets to:
Day 01 Month 01
Hour 00 Year (20) 00
Day 1-31 (0x01-0x1F)
Month 1-12 (0x01-0x0C)
• 156
R/W NV UInt
Hour /
Year
See Bytes
Hour 0-23 (0x00-0x17)
Year 0-199 (0x00-0xC7)
• 157
R/W NV UInt
Seconds
/
Minutes
See Bytes
Seconds 0-59 (0x00-0x3B)
Minutes 0-59 (0x00-0x3B)
• 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 buffers 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 is written to the log, and logging resumes 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, complete log buffer reads and this register set back to 0 in less time than the
Demand Sub-interval (preferred) or halt logging 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 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).
Modbus Point Map (cont.)
