KD Scientific Legato 200 Series User Manual
Page 84
84
Appendices
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KD Scientific Legato 200 Series Syringe Pump User’s Manual
Publication 5617-002-Rev F
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 or
RS-232
D-Sub 9
F/F Cable
USB or
RS-232 IN
D-Sub 9
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.
phone
508.429.6809
fax
508.893.0160
web
www.kdscientific.com
✐
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.
✐
NOTE: When daisy-chaining with RS-485, at a minimum, every 4th pump in the daisy-chain must be
self-powered (i.e. another stand-alone unit). This can be affected by force selection.
RS-485 Dasiy Chain Connection Options:
If all pumps have software versions 2.0.0 or higher, 99 pumps in chain.
•
If all pumps have software versions 1.0.6 or lower, 99 pumps in chain.
•
If mix of pumps with software version 1.0.6 or lower and 2.0.0 or higher, maximum of 5 pumps in chain
•
and 1 RS-485 adapter (catalog # 78-8339) required.
✐
NOTE: If a larger chain of pumps with mixed software versions is desired, pumps with software
versions 1.0.6 or lower can be returned to manufacturer for a hardware update.