Figure 4-13: Aib Rs-422 Interface Schematic; Table 4-6: Aib-485 Pin Designations - Moog Focal 903 User Manual

903-0628-00 Rev. 1
Full duplex communication runs transmit and receive on separate conductors, thus autosense is not required.
The AIB modules support full duplex transmission as either RS-422 or TTL data.
Connector pin designations for the WAGO connectors are given in the table below with default configuration
shaded.
Pin
1
2
3
4
Switch settings for the various configurations are given in Table 4-7. When using the module in RS-422 or
TTL input configuration, the autosense mode (SW3, SW4) should be set for full-duplex operation. Autosense
baud rate settings (SW5) are ignored when the module is in full-duplex or simplex modes.
As shown in Table 4-6 and Table 4-7, ISOGND for RS-485 configuration can be made available on pin 4 of
the Wago connector by setting switch SW2 circuit #6 to "ON" (=1). This can be used as a ground reference
for external equipment. (The default setting for pin 4 is N/C.)
Focal Technologies Corp.

Figure 4-13: AIB RS-422 Interface Schematic

Table 4-6: AIB-485 Pin Designations

RS-485 Designation
TX+/RX+
TX-/RX-
N/C
N/C (or ISOGND)
Model 903-HD User's Guide – FMB-X-2.5
RS-422 Designation
RX+
RX-
TX+
TX-
TTL Designation
TTL IN
N/C
TTL OUT
ISOGND
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