Envoy ACP/XF Application Programming Manual

Normal Response Mode (NRM) Protocols

EnvoyACP/XF Application Programming Manual–132179

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SDLC Multipoint Tributary

!RS-232C line interface

!Use of 1-second poll interval (100 * 10 milliseconds)

SETMODE fnum^1,16,%1002,100

If <> do error handling

!The following SETMODE call specifies

!2-octet address field

!2-octet control field

SETMODE fnum^1,19,,%30000

If <> do error handling

!Define station list

!This DEFINELIST call passes a station list to EnvoyACP/XF,

!specifying the station addresses of all tributary stations

!that the multipoint supervisor is controlling.

!It also specifies that, whenever instigated, polling is to

!be continuous.

DEFINELIST fnum^1,poll^list,addr^size,

num^entries,poll^count,0);

If <> do error handling

!Send SNRME

CONTROL fnum^1,13,3

If <> do error handling

SDLC Multipoint Tributary

The example below is for an SDLC multipoint tributary station that performs two-way,

alternate communication over half-duplex, nonswitched, line facilities:

!Open the line

!This opens the line $TRIB1 for exclusive read or write

!access and for nowait I/O with a maximum of 14 concurrent

!outstanding requests (the flags parameter specifies all of

!those characteristics)

!The OPEN procedure assigns a unique line number to this

!particular opening of the line $TRIB1 and returns it to the

!application process by way of the line^fnum integer

!variable

OPEN TRIB1,line^fnum,%36

If <> do error handling

!Set line configuration parameters

!The following SETMODE specifies

!multipoint tributary station

!half-duplex

!nonswitched