Model YPP6300 Pulse Input Rate/Totalizer
Instruction Manual
24
Modbus RTU Serial Communications
Serial communications connection is made to an RJ45 connector labeled
M-LINK on Figure 6. For interfacing to the
PRO
PLUS
use the YPPA1232
for RS-232, the YPPA1485 for RS-485, or the YPPA8008 for USB. The
same port is used for interfacing with all expansion modules (
e.g.
external
relays, digital I/O).
Use the YPPA1200 meter copy cable for meter-to-meter interfacing for
cloning purposes (
i.e.
copying settings from one meter to other meters).
Relay Connections
Relay connections are made to two six-terminal connectors labeled
RELAY1 – RELAY4 on Figure 6. Each relay’s C terminal is common only
to the normally open (NO) and normally closed (NC) contacts of the
corresponding relay. The relays’ C terminals should not be confused with
the COM (common) terminal of the INPUT SIGNAL connector.
C
NO
NO
NC
NC
C
RELAY4
RELAY3
4
3
6
5
2
1
C
NO
NO
NC
NC
C
RELAY2
RELAY1
4
3
6
5
2
1
Figure 11: Relay Connections
Summary of Contents for YPP6300
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