9
© Sealevel Systems, Inc.
3612 Manual | SL9115 9/2021
Technical Description, continued
Interface Selection
The
PC-ACB.MP
supports a variety of electrical interfaces. Refer to the
Control and Status Register
Definitions
found in the
Technical Description
section of this manual for this bit description. There is line
termination on RXD, RXC, and TXC in the following modes: RS-530, RS-530A, RS-485T, and V.35.
HEX
M3
M2
M1
M0
Interface Mode
0
0
0
0
0
All signals are high impedance
1
0
0
0
1
* not supported *
2
0
0
1
0
RS-232
3
0
0
1
1
* not supported *
4
0
1
0
0
RS-485T with 120 ohm termination
5
0
1
0
1
RS-485 without termination
6,7,8,9
0
1
1
0
* not supported *
A
1
0
1
0
single ended loop-back
B
1
0
1
1
differential loop-back
C
1
1
0
0
* not supported *
D
1
1
0
1
RS-530
E
1
1
1
0
V.35
F
1
1
1
1
RS-530A
