General Dynamics DIGITAL TRACKING RECEIVER - Page 124

Appendix C– DTR Remote M&C Protocol CG-6073 (Rev R, June, 2012)
63
Added Menu Items: (v1.19.06 or later)
SHELL
Path: / CONFIGS COMM-PARAM PORT-3 SHELL
Type: Data Editor
Syntax: SHELL [= n] | [D]
Range: Integer: 0 .. 1
0 Disabled
1 M&C Shell
Notes: SHELL determines the communications protocol used on this serial port. M&C
Shell: provides monitor and control protocol support including status polling and
system configuration capability.
PORT 3
Path: / CONFIGS COMM-PARAM PORT-3
Type: Sub Menu
Syntax: PORT-3
Notes: PORT 3 is used for M&C communications on a multi-drop half-duplex 485 bus. This
menu controls the BPS, SHELL, and bus addressing parameters of this PORT.
Notice that the data parameters are set in factory to: 8 Data bits, 1 Stop bit, No
Parity. PORT 3 is available on the back panel as a 9 pin D subminiature socket
connector.
The RS-485 electrical pinout is:
Pin 7=Cable Shield
Pin 1=RxD/TxD+
Pin 6=RxD/TxD –
MASTER ADDRESS
Path: / CONFIGS COMM-PARAM PORT-3 MASTER-ADDRESS
Type: Data Editor
Syntax: MASTER-ADDRESS [= n] | [D]
Range: Integer: 0 .. 31
Notes: MASTER-ADDRESS is the address of the master (controlling) device on the multi-
drop RS-485 bus. There are a maximum of 32 addresses, ranging from 0 to 31. On
the bus, the actual ASCII value used for addressing is the address assigned here
plus the value of the parameter ADDRESS OFFSET.