Installation guide

66 DC 900-1564A
Synchronous Link Control (SLC) Programmer’s Guide
a
For the SLC_OPR_SEND* write codes and the SLC_FLOW* read codes, the iProtModifier field is
specified in combination with the
usProtCircuitID field. For these codes, the iProtModifier field con-
trols the content of the command sent, and the
usProtCircuitID field controls the channel(s) used to
send the command to the SLC network; the specified channels could be different for the two fields.
b
Link Control Block (LCB)
Table 5–7: DLI_PROT_CONTROL Operator Control Options
SLC Command Code
(iProtModifier Field)
Operator Control Option
Command Description
SLC Channel Number
(usProtCircuitID Field)
Write Options:
0 = All channels (1…7)
1…7 = Individual channel
(See footnote a below)
SLC_OPR_CHANNEL_START
Set channel online
SLC_OPR_CHANNEL_STOP
Set channel offline
SLC_OPR_IN_RESUME
Report incoming data
SLC_OPR_IN_STOP
Discard all incoming data
SLC_OPR_OUT_RESUME
Transmit outgoing data
SLC_OPR_OUT_STOP
Hold outgoing data
SLC_OPR_SEND_RESUME_ALL
SLC_OPR_SEND_RESUME_C1…C7
a
Send LCB
b
; resume all channel(s)
Resume channel 1…Resume channel 7
SLC_OPR_SEND_STOP_ALL
SLC_OPR_SEND_STOP_C1…C7
a
Send LCB; stop all channel(s)
Stop channel 1…Stop channel 7
Read Options:
SLC_FLOW_RESUME_ALL
SLC_FLOW_RESUME_C1…C7
a
Send LCB; resume all channel(s)
Resume channel 1…Resume channel 7
SLC_FLOW_STOP_ALL
SLC_FLOW_STOP_C1…C7
a
Send LCB; stop all channel(s)
Stop channel 1…Stop channel 7