24 SOCOMEC - Ref. : 875 092A
Address
Totalizing meters
METERS DISPLAY
Pulse meters for power demand storing
Decimal Hexadecimal N° of words (1) Description Unity
768 300 2 Meter 1
770 302 2 Meter 2
772 304 2 Meter 3
774 306 2 Meter 4 in energy metering
776 308 2 Meter 5
778 30A 2 Meter 6
780 30C 2 Meter 7
782 30E 2 Value between 2 signals for input 1 Pulses
784 310 2 Value between 2 signals for input 2
786 312 2 Value between 2 signals for input 3
788 314 2 Value between 2 signals for input 4
Zone size (1): 22 words in decimal or 16 in hexadecimal.
0.01 kWh
and no value in pulses
DISPLAY (FUNCTION 3)
METERS
NB:
A maximum of 60 words can be read
in one frame.
COMMUNICATION
The Countis Ci system communicates via a JBUS/MODBUS
®
protocol invol-
ving a master/slave dialogue. Two dialogues are possible:
• the master communicates with a slave (Countis Ci) and waits for its response,
• the master communicates with all the slaves (Countis Ci) without waiting for
their response.
The communication mode is the RTU mode (Remote Terminal Unit) with
hexadecimal characters consisting of 8 bits.
NB:
• The integration time must not exceed
3 silences (the time taken to transmit
a character) for the message to be
processed.
• By selecting slave address 0, the
same message is transmitted to all
the Countis devices present on the
network (only for functions 6 and 16).
COMMUNICATION FORMAT
Slave address Function code Address Data CRC16
3 to read n words (128 maximum )
6 to write a word
8 to diagnose master/slave exchanges from meters 1, 3, 4, 5 and 6
16 to write n words (128 maximum)
This is a standard format consisting of:
The following functions are essential in order to make full use of information:
To Next Page
Loading...
