NAG Channels


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11. NAG Channels

The Network Agent Channels behaves similarly like Serial channels but they does not have the physical inputs/outputs. The packets after processing in NAG are sent into node in the same CU. The menu is divided into two sections, CNI and Protocol submenus.

11.1. NAG Channel to Node Interface

The CNI menu is identical for all channel types. For CNI menu description see chapter Chapter 25, CNI-channel to node interface

11.2. NAG Protocol

The NAG can run in increasing number of modes. The content of menu differs for individual modes. The setting for TMM (Tunnel Morse-Morse) mode is shown here.

From MORSE main menu type GPe Enter Enter

 id |typ|subt|  addr |  mask  |
(0) 0001 0000 00001000 FFFF0FFF 
(1) 0000 0000 00000000 00000000 

de(f)ault (r)ead (w)rite
(I)nit (S)ync

type 0 Enter

Net Agents:  (t)ype:TMM 
(I)nit (W)rite

type t Enter

(n) NONE 
(t) TMM 
(r) RTU 
(d) ADIO
(k) KATO
(p) TSTP

choose t Enter for type Tunnel Morse-Morse

type q Enter

choose p Enter for parameter setting

Network agent parameters:

choose t Enter again for TMM parameters

Tunnel Morse-Morse parameters:

The retranslation packet incoming in Tunnel Morse-Morse is packed in new service packet (see MORSE Guide) and the new destination address is created for it. This address is derived from original dst address by means of next two parameters.

(m)ask: FFFF0FFF

— Where there are “1” bits in this mask the original dst address is maintained.

(a)ddr: 00001000

— In those bits where the mask is zero the dst address bits are replaced with the respective values from the parameter (a)ddr.

(s)ubt: 0000

— Subtype is not used in TMM mode.

Description of individual Net Agents are in the MORSE Guide 2 or in chapter Interface Protocols.

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