LINK Systems OmniLink - Feed Interface - Manual (Page 20)

OmniLink 5000 Feed Manual December 13, 1999
2.14
Manual Rev 2.3
2.19.2 Rapid-Air Connections with New
Communications board
The connection to a Rapid-Air Feed from the new
communications board is as follows:
Table 2.20
OmniLink OIT to Rapid-Air
Connections for New
Communication Board
Link PN 107833
OmniLink
Port 4 Function /
Color Rapid-Air
Connector J58
Ground Ground
(GREEN/W) Pin 5
RXD+ Receive+
(ORANGE/W) Pin 6
RXD- Receive-
(W/ORANGE) Pin 7
TXD+ Transmit +
(BLUE/W) Pin 8
TXD- Transmit-
(W/BLUE) Pin 9
Notes:
‚ Link makes a small adapter board ( PN 107858)
that plugs into the Rapid-Air communications
port to provide 2 communications connectors.
The Rapid-Air operator interface (if present)
plugs into one connector (either one), and the
Link feed interface cable plugs into the other.
‚ Rapid-Air has used two different servo controls
at different times, the Pacific Scientific SC750
series, and the SC950 series. The
communications connector is the same on each
of the controls.
‚ The connections from the operator terminal to
J58 must also remain in place.
‚ On the SC750 series of servo controls, Input 14
(Pin 6 of J56) must be low to enable remote
download of feed parameters. On the SC950
series of servo controls, there is a circuit board
below the communications connector with
terminals on it. If the wires to the board have
resistors at the terminals, then terminal 14
should be disco n n e c t ed to enable
communications. Call Rapid-Air if there is any
trouble in identifying these inputs.
‚ Port 4 of the new communications board must
be jumpered for RS-485 operation. See section
3.3 for configuration information.
‚ On some older versions of Rapid-Air software,
if the feed is powered down but the System
5000 is not, the feed will lose the current length,
speed, and acceleration values but the 5000 will
not know that. To reset the values in the feed,
the feed screen must be entered and the length
reprogrammed. This will reset all three values.
If both units are powered down, everything will
be reset automatically. Contact Rapid-Air for
information on software updates to correct this.
‚ Some version of Rapid-Air software do not
support a read back of the values sent to it.
Always try the “Rapid Air Type 2" feed type
first to see if this is supported. If not, “Rapid
Air Type 1" can be used. It is recommended to
contact Rapid-Air for a software update if this is
the case.