Woodward MicroNet Simplex - Figure 7-9. RTN Service Port (Mini-DIN6 F)

Manual 26166V1 MicroNet Simplex & MicroNet Plus
Woodward 80
Configuration Notes:
- A combination of approved copper and fiber optic Ethernet switches are allowed.
- A maximum of 4 switches and 1 fiber cable delay shall be allowed in any communication path.
- RTN cables from the main CPU rack to the local RTN switch hardware must be 3 m (10 ft. max).

Copper Expansion: Using copper Ethernet cables and switches, each expansion rack may be
located up to 30 meters away from the main CPU chassis.

Fiber Optic Expansion: Using fiber optic cables and switches, each expansion rack may be located
up to 2 km away from the main CPU chassis.
Fiber Optic Cable Specification
 62.5 / 125 μm multi-mode, duplex fiber
 Standard SC Type connectors
 Wavelength : 850 nm, 1300 nm
 Attenuation @ 1300 nm : < 1.5 db/km
 Bandwidth @ 1300 nm : > 500 MHz – km
 Flammability type OFNR (riser, UL-1666)
 Minimum bend radius of 7 cm
 Refer to Woodward reference dwg 9097-2077
7.1.8—RS-232 Service Port
An isolated RS-232 service port is located on the front of the Remote RTN module. This port is for
VxWorks operating system use only and cannot be configured for application software use. The
communication settings are fixed at 38.4 kBd, 8 data bits, no parity, 1 stop-bit, and no flow control.
For debug use, a null-modem cable and 5450-1065 Serial Adapter cable (PS2M to DB9F) is required to
attach this port to a PC. This port is to be used by trained Field Service personnel only!
Shielded cable is required when connecting to the Remote RTN module’s serial port. Using shielded
cable will help ensure the robustness of the serial communications.
Pin 1 – RS-232 Receive
Pin 2 – RS-232 Transmit
Pin 3 – Signal Ground
Pin 4 – Not Used
Pin 5 – Signal Ground
Pin 6 – Not Used
Figure 7-9. RTN Service Port (mini-DIN6F)
7.1.9—Troubleshooting / Flash Codes
The MicroNet Remote RTN module runs off-line and on-line diagnostics that display troubleshooting
messages through the debug Service Port and AppManager. Off-line diagnostics run automatically on
power-up and when the Reset switch is asserted. On-line diagnostics run during normal Control System
operation when the GAP application is active. More information on diagnostics tests, subsequent LED
flash codes, and serial port messages is contained in the VxWorks manual.
Released