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Page 21
INPUT
COMMANDS
FORMAT
The scale can be controlled with the following commands. Press the
[Enter]
key of the PC
after each command.
T<cr><lf>
Tares the scale to display the net weight. This is the same as pressing
[
➔
0/T
]
.
Z<cr><lf>
Sets the zero point for all subsequent weighing. The display shows
zero.
P<cr><lf>
Prints the results to a PC or printer using the RS-232 interface. It also
adds the value to the accumulation memory if the accumulation
function is not set to automatic.
10.0
RELAY
INTERFACE
The indicator is supplied with drivers to control external relays. The drivers can be used to
control a number of different relays depending upon the users need. The relay drivers are
isolated outputs requiring the use of an external power supply for the relays.
The output to drive external relays is on the circuit board inside the enclosure. To gain
access you must remove the 6 screws securing the front to the rear of the case. Pass the
wires for the relays through the grommet on the rear panel. The wires will connect to the
PCB using the terminal strip P1.
ZERO
LOW
OK
HI
COM
SH
IE
SEN+
EX
E
-
EX
E
+
SI
G+
SIG-
SEN-
09/01
/2009
AE972
1 VE
R B
RXT
TXT
GND
BT1
C18
U5
U4
Q5
Power1
LC1
COM1
U1
P1
Relay Output
Common
High
OK
Low
Zero
RS-232 Interface
Load Cell Input
Power Connector
Battery Vin
+ - no polarity
Clock Battery
CR1220 type
The circuit to control the relays requires an external voltage compatible with the relays used.
Contact your supplier for a relay interface that is compatible with the relay drivers, however
other interfaces can be used as long as the following conditions apply.
Summary of Contents for IPSW 100
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