1040-0011 Revision 88
10 APPENDIX F - XY2-100 PROTOCOL INTERFACE
The XY2-100 Serial Link (also known as Serial Link 1 and XYZ-100) is a synchronous TIA/EIA-422-B
differential digital interface for communication of three 16-bit position words and a single 16-bit
status word for 2- and 3-Axis servo applications
10.1 CONNECTIONS AND SIGNAL DESCRIPTIONS
Typically, a female connector is used by a position data receiver such as a scan head, and may
optionally include differential power as shown in below table. However, this power distribution is
not supported by the SMC.
Signaling is differential 3.3-5V TIA/EIA-422-B. Sync and data are sampled on the falling edge of the
clock and must observe a 50ns setup and 50ns hold. The voltage of a logical "1" is V+LINE >V-LINE.
XY2-100: DB-25
CK: clock, 2MHz nominal
SYNC: indicates start of 20-bit data word
XCH: 20-bit X-axis data send
YCH: 20-bit Y-axis data send
ZCH: 20-bit Z-axis data send
STATOU1T: 20-bit status return
V+: +15V to +24V (not supplied by SMC)
GND: Common reference for V+ and V-
V-: -15V to -24V (not supplied by SMC)
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