KD Scientific Allegro Peristaltic Pump Series User Manual
Page 70
70
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KD Scientific Allegro Peristaltic Pump System User’s Manual
Publication 5613-004-REV-A
Appendices
RS-485
1
2
3
4
5
6
Pin #
RS-485 In Signal
RS-485 Out Signal
Notes
1
PWR IN
PWR OUT (+30V)
*
2
GND
GND
3
RS-485 A
TIED TO PIN 4
**
4
RS-485 B
TIED TO PIN 3
**
5
TIED TO PIN 6
**
RS-485 A
6
TIED TO PIN 5
**
RS-485 B
Mating Face
*
Protected by
resettable fuse
**
100 Ω, ½ w to
GND termination
RS-485 In/Out - IEEE-1394 Sockets
Daisy-Chaining via RS-485
P.C.
PUMP
ADDR Ø
USB
USB
RS-485
OUT
PUMP
ADDR 1
RS-485
OUT
RS-485
IN
PUMP
ADDR n
RS-485
IN
RS-485
IEEE 1394
Cable
RS-485
• • •
IEEE 1394
Cable
!
CAUTION: DO NOT CONNECT TO FIREWIRE PORTS ON A PC. DAMAGE MAY
OCCUR TO PUMP AND/OR PC.
✐
NOTE: When applying power to pumps in a daisy chain, apply power to the last group in the chain first
and work backwards.
✐
NOTE: When removing power, be aware that power removed from a stand-alone unit will cause power to
be removed from all RS-485 powered units deriving power from that stand-alone unit.
✐
NOTE: Power may be removed from any group of pumps, except the first group, without affecting
communications “downstream”
✐
NOTE: Each pump in the daisy-chain must have a unique address. The first pump must be set to address 00.