16
address.(The modbus device address plus 1,645
number is incremented by 1, and it occupies 2
numbers in total, equivalent to 2 meters).
7.2 DLT645 规约 DLT645 protocol
DJSF1352-RN 仪表采用 DLT645 协议,支持 07、
97 版本，仪表表号默认为条形码后 12 位，详见菜
单设置。规约支持电压、电流、功率、正反向及组
合电能的读取，复费率电能读取。
DJSF1352-RN meter adopts DLT645 protocol,
supports 07, 97 version. The meter number defaults to
12 digits after barcode. See menu settings for
details.The protocol supports reading of voltage,
current, power, forward and reverse direction and
combined energy, and multi-rate energy reading.
97 规约只支持基本电参量和电能的读取，97
规约电压最高
9999V
，如果额定电流值超过规约的
允许值，随额定电流增大而以
10
倍的规律变小，
额定功率值如果超过规约的允许值，固定变小
1000
倍。
The 97 protocol only supports the reading of
basic electrical parameters and electrical energy. The
voltage of 97 protocol is up to 9999V. If the rated
current exceeds the allowable value of the protocol, it
will become smaller with a factor of 10 with the
increase of the rated current, if the rated power
exceeds the allowable value of the protocol ,it’s fixed
1000 times smaller.
07 规约还支持编程记录，时间设置的 10 次事件
的读取,12 个月的复费率及需量的读取，3 次数据瞬
时冻结和
12
次定时冻结的数据查询。
The 07 protocol also supports programming
records, reading of 10 events of time setting, reading of
12-month multi-rates and demand, 3 times
instantaneous frozen data, and 12 times frozen data
queries.
07 规约修改部分功能 Part of the modified function of the 07 protocol
读取电压为正数，及时输入为负绝对值显示。
读取电流和功率为有符号数，最大
0-799999
（电流
最 大 ± 799.999A 或 KA ， 功 率 最大 79.9999kw 或
(MW)）。单位是否切换见下表中说明。
The reading voltage is positive and the input is
negative absolute value display.Read current and
power are signed number, maximum 0-799999
(current max. ±799.999A or KA, power max.
79.9999kw or (MW)). Whether or not the unit is
switched is described in the following table.
读取电压，如果读取到
999.9V
此时为越界状态，实际电压超过
1000V,
无负
数
Read voltage, if 999.9V is read at this time, it is an out-of-bounds state, actual
voltage exceeds 1000V, there is no negative number.
bit0
表示功率反向，
bit2
表示电流反向，
bit3
表示功率反向，
bit8
表示
DI1
，
bit9 表示 DI2，bit12 表示 DO1，bit13 表示 DO2。
Bit0 means power reverse,bit2 means current direction, Bit3 means power
reverse, bit8 means DI1，bit9 means DI2，bit12 means DO1，bit13 means DO2。
读取 PT 比值（一般为变送二次接入电压时使用）
Read PT ratio (usually used when transferring secondary access voltage)
读取电流一次值（例 200A/75mV 读取为 200）
Read primary rated current (For example ,200A/75mV is read as 200)
读取越界状态，bit0 表示过压超过 1000V，bit1 表示电流规约不够显示，
02020100
标识符实际读取的数据被除以
1000
；
bit2
表示功率规约不够显示，
02030000 标识符实际读取的数据被除以 1000；
Read out-of-bounds state, bit0 indicates over voltage exceeds 1000V, bit1
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