socomec DIRIS Am, Operating Instructions Manual

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SOCOMEC - Ref. : 875 508A 51
ENGL
ISH
COMMUNICATION (OPTIONAL)
The JBUS/MODBUS used by the
Diris Am involves a dialogue using a
master-slave hierarchical structure.
There are two possible dialogues:
• the master communicates with a
slave (Diris Am) and waits for its
reply
• the master communicates with all
the slaves (Diris Am) without waiting
for their reply.
The standard communications frame
consists of:
The mode of communication is the
RTU (Remote Terminal Unit) using
hexadecimal characters of at least 8
bits.
Slave address Function code Address Data CRC 16
According to the JBUS/MODBUS ©
protocol, transmission time must be
less than 3 silences, i.e. the emission
time of 3 characters so that the mes-
sage is processed by the Diris
© .
NB:
When selecting slave address 0, a
message is sent to all the instruments
present on the network (only for func-
tions 6 and 16). To correctly use information, the fol-
lowing functions are important:
3 : to read n words (maximum 128).
6 : to write one word.
8 : to diagnose exchanges bet-
ween the master and the slave
via meters 1, 3, 4, 5 and 6.
16 : to write n words (maximum 128).
LIST OF PARAMETERS TO BE DISPLAYED (FUNCTION 3)
TABLE OF VALUES WITH ALLOCATED CURRENT AND VOLTAGE WINDING RATIOS
Decimal Hexa. Number Text Unit
address address of words
768 300 2 phase 1 current mA
770 302 2 phase 2 current mA
772 304 2 phase 3 current mA
774 306 2 Neutral current mA
776 308 2 phase to phase voltage U12 V/100
778 30A 2 phase to phase voltage U23 V/100
780 30C 2 phase to phase voltage U31 V/100
782 30E 2 phase to neutral voltage phase 1 V/100
784 310 2 phase to neutral voltage phase 2 V/100
786 312 2 phase to neutral voltage phase 3 V/100
788 314 2 Frequency Hz/100
790 316 2
∑
Active power +/- kW/100
792 318 2
∑
Reactive power +/- kvar/100
794 31A 2
∑
Apparent power +/- kVA/100
796 31C 2
∑
Power factor L/C
-: capacitive and +: inductive
0,001
798 31E 2 Active power phase 1 +/- kW/100
800 320 2 Active power phase 2 +/- kW/100
802 322 2 Active power phase 3 +/- kW/100
804 324 2 Reactive power phase 1 +/- kvar/100
806 326 2 Reactive power phase 2 +/- kvar/100
808 328 2 Reactive power phase 3 +/- kvar/100
810 32A 2 Apparent power phase 1 kVA/100
812 32C 2 Apparent power phase 2 kVA/100
814 32E 2 Apparent power phase 3 kVA/100
816 330 2 Power factor phase 1
-: capacitive and +: inductive
0,001
818 332 2 Power factor phase 2
-: capacitive and +: inductive
0,001