LINK Systems LinkNet I - Manual (Page 10)

LinkNet
2.4
manual rev 2.1 March 25, 1999
2.3 System 1100 Connections
System 1100 tonnage monitors with software
versions older than version 3.2 in the operator
interface board (the circuit board that is mounted on
the door of the 1100) will need to have a software
upgrade in order to function with LinkNet. Contact
Link for the appropriate software. Appendix “A”
has complete instructions for upgrading the
software. The System 1100 has 3 terminal strips on
the circuit board mounted to the door of the unit,
two of which should already be wired. The
“NETWORK” port (see Figure 2.3) should be
wired as follows:
Terminal A - Green/White and White/Green
Terminal B - White/Blue
Terminal C - Blue/White
Terminal D - White/Orange
Terminal E - Orange/White
Figure 2.3: System 1100 Door Circuit Board
2.4 Drop Box Terminals
There are two kinds of drop boxes, regular and
repeater.
Regular drop boxes (Figure 2.4) simply have
connectors for field wiring to pass the
communication signals through.
Repeater drop boxes (Figure 2.5) have active
circuitry in addition to the terminals the regular drop
box has. This circuitry allows the network to extend
over 4000ft and can allow more than 32 units to be
attached to the line.
Drop boxes have three sets of plugable terminal
strips labeled “DATA IN”, “DATA OUT”, and
“UNIT”. The terminal strip labeled “DATA IN”
should be connected to the wire coming from the
host computer side, “DATA OUT” should go to the
next drop box, and “UNIT” should go to the Link
equipment on the press. All three connectors should
be wired as follows:
GND - Green/White and White/Green
RXD+ - Orange/White
RXD- - White/Orange
TXD+ - Blue/White
TXD- - White/Blue
SHLD - Shield (bare) Wire of Cable
For Repeaters Only:
L1 - “Hot” side of 110V AC
L2 - “Neutral” side of 110V AC
M. GND - Machine Ground
Some older versions of the drop box do not
have the “SHLD” terminal. In this case, tie the
shields of all the cables together with a wire
nut.