Smema Interface - Agilent Technologies 5DX II Series Installation Manual

Appendix B

SMEMA Interface

The communication interface between adjacent machines is provided
by way of a Surface Mount Equipment Manufacturers Association
(SMEMA) compliant protocol. The purpose of multi-machine in-line
interfacing is to allow the Agilent 5DX to be integrated directly with a
customer's current printed circuit assembly manufacturing process.
The following illustrations and charts provide the connection
specifications for the SMEMA-compliant interconnections.
TABLE B-1. SMEMA Electrical Interface Signals
SMEMA Signal
Name
Send Request Input
(SRI)
Transfer Request
Output (TRO)
Send Request
Output (SRO)
Transfer Request
Input (TRI)
Appendix B - 61
Digital Digital I/O
I/O Signal Name
Bits
IDC 11 SMEMA SRI -
Panel In
Available
ODC 6 SMEMA TRO -
Agilent 5DX Not
Busy
ODC 7 SMEMA SRO -
Panel Out
Available
IDC 13 SMEMA TRI -
Output Not Busy
Appendix B
Function
The upstream equipment forces
this signal low when it is ready to
send a panel to the Agilent 5DX.
The Agilent 5DX forces this signal
low when it is ready to accept the
panel from the upstream
equipment.
The Agilent 5DX forces this signal
low when it is ready to send a
panel to the downstream
equipment.
The downstream equipment forces
this signal low when it is ready to
accept the panel from the Agilent
5DX.