YEX1 Expansion board

YEX1 mezzanine expansion board for YSSC2P features:

• 3 x RS-422 differential receivers for ABZ incremental encoder
• 2 x 0-10V 12bit DACs
• RS-485 half-duplex port (YIO bus)
• RS-422 full-duplex port (-A)
• 4 (-A) or 8 (-B) x TTL I/O lines

Layout

• CN2 - main board connector
• X1 - encoder and RS-485 connector
• X2 - analog output
• X3 - RS-422 and digital I/O

Pinout

X1
1	X	RS-485 YIO bus
2	/X
3	GND
4	Z	Encoder index input
5	/Z
6	+5V
7	GND
8	B	Encoder B phase input
9	/B
10	A	Encoder A phase input
11	/A
12	GND

X2
1	VO1	Channel #1 0-10V analog output
2	GND
3	VO2	Channel #2 0-10V analog output

X3 (-A)
1	IN15 / A1 / A4	5V-tolerant 3.3V LVTL I/O
2	IN14 / B1 / B4
3	IN13 / Z1 / A5
4	IN12 / B5
5	IN16	3.3V LVTTL I/O
6	+5V
7	GND
8	TX	RS-422 transmit output
9	/TX
10	RX / IN19	RS-422 receive input
11	/RX / IN19
12	GND

X3 (-B)
1	IN15 / A1 / A4	5V TTL I/O Group 1
2	IN14 / B1 / B4
3	IN13 / Z1 / A5
4	IN12 / B5
5	GND
6	+5V
7	GND
8	IN16 / B3	5V TTL I/O Group 2
9	IN17 / A3
10	IN18 / B2
11	IN19 / A2
12	GND

Jumpers (-B)
J1	Group 1 direction 1-2:Input, 2-3:Output
J2	Group 1 direction 1-2:Input, 2-3:Output

Keep set to input 1-2 with the standard firmware!