CET PMC-53A User Manual

CET Electric Technology
78
252
RW
Alternate Day #85 Date¹
UINT32
Table 5-50
254
RW
Alternate Day #85 Daily Profile
UINT16
0* to 19
255
RW
Alternate Day #86 Date¹
UINT32
Table 5-50
256
RW
Alternate Day #86 Daily Profile
UINT16
0* to 19
258
RW
Alternate Day #87 Date¹
UINT32
Table 5-50
260
RW
Alternate Day #87 Daily Profile
UINT16
0* to 19
261
RW
Alternate Day #88 Date¹
UINT32
Table 5-50
263
RW
Alternate Day #88 Daily Profile
UINT16
0* to 19
264
RW
Alternate Day #89 Date¹
UINT32
Table 5-50
266
RW
Alternate Day #89 Daily Profile
UINT16
0* to 19
267
RW
Alternate Day #90 Date¹
UINT32
Table 5-50
269
RW
Alternate Day #90 Daily Profile
UINT16
0* to 19
Table 5-49 Alternate Days Setup
Notes:
1) The following table illustrates the data structure of the Date register:
Byte 3
Byte 2
Byte 1
Byte 0
Reserved
Year-2000 (0-37)
Month (1-12)
Day (1-31)
Table 5-50 Date Format
When the Year and/or Month are set as 0xFF, it means the Alternate Day is repetitive by year and/or
month, i.e. the same day of every year or every month is an Alternate Day.
5.13 Time
There are two sets of Time registers supported by the PMC-53A – Year / Month / Day / Hour / Minute /
Second (Registers # 60000 to 60002) and UNIX Time (Register # 60004). When sending time to the PMC-
53A over Modbus communications, care should be taken to only write one of the two Time register sets.
All registers within a Time register set must be written in a single transaction. If registers 60000 to 60004
are being written to at the same time, both Time register sets will be updated to reflect the new time
specified in the UNIX Time register set (60004) and the time specified in registers 60000-60002 will be
ignored. Writing to the Millisecond register (60003) is optional during a Time Set operation. When
broadcasting time, the function code must be set to 0x10 (Pre-set Multiple Registers). Incorrect date or
time values will be rejected by the meter. In addition, attempting to write a Time value less than Jan 1,
2000 00:00:00 will be rejected.
Register
Property
Description
Format
Note
60000
9000
RW
High-order Byte: Year
UINT16
0-37 (Year-2000)
Low-order Byte: Month
1 to 12
60001
9001
RW
High-order Byte: Day
UINT16
1 to 31
Low-order Byte: Hour
0 to 23
60002
9002
RW
High-order Byte: Minute
UINT16
0 to 59
Low-order Byte: Second
0 to 59
60003
9003
RW
Millisecond
UINT16
0 to 999
60004
~
60005
9004
~
9005
RW
UNIX Time
UINT32
0x386D4380 to 0x 7FE8177F
The corresponding time is
2000.01.01 00:00:00 to
2037.12.31 23:59:59
(GMT 0:00 Time Zone)
Table 5-51 Time Registers
5.14 Remote Control
The DO Control registers are implemented as both “Write-Only” Modbus Coil Registers (0XXXXX) and
Modbus Holding Registers (4XXXXX), which can be controlled with the Force Single Coil command
(Function Code 0x05) or the Preset Multiple Hold Registers (Function Code 0x10). The PMC-53A does
not support the Read Coils command (Function Code 0x01) because DO Control registers are “Write-
Only”. The DO Status register 0098 should be read instead to determine the current DO status.
The PMC-53A adopts the ARM before EXECUTE operation for the remote control of its Digital Outputs

CET PMC-53A Specifications

General

Brand	CET
Model	PMC-53A
Category	Measuring Instruments
Language	English