CET PMC-230, User Manual, Page: 23 / 37

CET Electric Technology
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2. For the DI Status register, the bit values of B0 to B2 represent the states of DI1 to DI3, respectively, with “1” meaning Active (Closed)
and “0” meaning Inactive (Open).
3. For the Disconnect Relay Status register, the returned value “1” means Connected while “0” means Disconnected.
4. The PMC-230 has one SOE Log and one DR Log. Each of these logs has a Log Pointer that indicates its current logging position. The ran ge
of the Log Pointer is between 0 and 0xFFFFFFFF, and it is incremented by one for every new log generated and will roll o ver to 0 if its
current value is 0xFFFFFFFF. If a Clear Log is performed through the Front Panel or via communications, its Log Pointer will be reset to
zero, and the SOE Log Pointer will be immediately incremented by one with a new “Clear SOE” event. When the number of events is
larger than the Log Depth, only the latest 32 SOE logs or up to 65,535 DR Logs will be stored on a FIFO basis.
The latest log location can be determined as Latest Log Location = Modulo [ Log Pointer / Log Depth ], where
Log Pointer is either the SOE Log Pointer or DR Log Pointer and
Log Depth is fixed at 32 for the SOE Log Depth or the DR Recording Depth (see Section 5.9 )
5.2 Real Time Energy Measurements
Register Property Description Format Scale Unit
0500 RW kWh Import INT32
x0.01
kWh
0502 RW kWh Export INT32
0504 RW kvarh Import INT32
kvarh
0506 RW kvarh Export INT32
0508 RW kVAh INT32 kVAh
0510 RW kWh Import of T1 INT32
kWh
0512 RW kWh Export of T1 INT32
0514 RW kvarh Import of T1 INT32
kvarh
0516 RW kvarh Export of T1 INT32
0518 RW kVAh of T1 INT32 …
0520~0538 … … INT32 kWh
0540 RW kWh Import of T4 INT32
kWh
0542 RW kWh Export of T4 INT32
0544 RW kvarh Import of T4 INT32
kvarh
0546 RW kvarh Export of T4 INT32
0548 RW kVAh of T4 INT32 kVAh
Table 5-2 Energy Measurements
5.3 DI Pulse Counter
Register Property Description Format Range/Unit
1200 RW DI1 Pulse Counter INT32
0 to 99,999,999 1202 RW DI2 Pulse Counter INT32
1204 RW DI3 Pulse Counter INT32
Table 5-3 DI Pulse Counter
5.4 Harmonic Measurement
Register Property Description Format Scale/Unit
1300 RO I THD Float
x1, 0.1 means 10%
1302 RO U THD Float
Table 5-4 Harmonic Measurements
5.5 Demand Measurements
5.5.1 Present Demand
Register Property Description Format Scale Unit
3000 RO U Float
x1
U
3002 RO I Float A
3004 RO P Float kW
3006 RO Q Float kvar
3008 RO S Float kVA
Table 5-5 Present Demand
5.5.2 Max. Demand of This Month (Since Last Reset)
Register Property Description Format Scale Unit
3400~3405 RO U
See
Table 5-8 Demand Data
Structure
x1
U
3406~3411 RO I A
3412~3417 RO P kW
3418~3423 RO Q kvar
3424~3429 RO S kVA
Table 5-6 Max. Demand of This Month