6.1 Basic Function
Slave Controller, model SC2 with communication interface can realize long distance monitoring
function. In the control room, pump users can realize all functions of L932/B (Master Controller) through
SC2
without the parameter calibration and adjusting.
6.2 Special Application
As adopting communication interface, the wire communication distance is less than 1200metres. For
those installation environment which require long distance communication, say: mine, water tower,
across railway, road and bridge etc, users can adopt RS485 extender, wireless communication or GSM
system.
Please contact the manufacturer for more information.
6.3 Technical parameter
The following chart shows main technical parameters of communication link between L932/B & Slave
Controller (SC)
Installation & Operation Manual
L932/B
Communication address
Setting range of controller address: 1-126
127: broadcast address, Host computer broadcasting, Slave machine
responsion forbidden
Baud rate
1200 bps
、
2400 bps
、
4800 bps
、
9600bps
Default: 9600bps
1start bit 8data bit, 1stop bit, no verify
1start bit 8data bit, 2stop bit, no verify
Default: 1start bit 8data bit, 1stop bit, no verify
Data format
RS485 Bus Interface: asynchronism semiduplex
Physics Interface
Main technical data
Protocol type
MODBUS Protocol (RTU)
Rated input voltage for SC
AC220V/50Hz, single phase
Main installation data
wire communication distance
1200meters max by shield twisted pair cable (STP) for RS485 & CAN
5000meters max by STP and RS485 extender
STP
RS485 extender
STP-120
Ω
one pair 20AWG for RS485 & CAN
5000meters (9600bps)
Intelligent Pump Controller
Installation & Operation Manual Ver.1.1
.17.
A
+
B-
Input
power
A
B
