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TCP/IP Ethernet Communications User’s Manual – January 1996H-10
GFK-1004B
09—12—95 13:21 GE FANUC SERIES 90—70 (v6.01) Page 9
| << RUNG 19 >>
|
|ALW_ON
|%S00007 +—————+
+——] [———+ NE_ +—
| | INT |
| | |
|WT_CRSW | | +—————+
|%R00002—+I1 Q+—————————+ NE_ +—
| | | | INT |
| | | | | WRT_ERR
| | | WT_CRSW | | %T00006
| CONST —+I2 | %R00002—+I1 Q+———————————————————————————————————————————(S)——
| +00000 +—————+ | |
| | |
| CONST —+I2 |
| +00001 +—————+
|
| (****************************************************************************)
| (* If RD_OK, fire one—shot DO_WRT to execute next Write Channel Command. *)
| (* If WRT_OK, fire one—shot DO_READ to execute next Read Channel Command. *)
| (* This interlock allows the ladder to alternate between read and write *)
| (* COMREQs. *)
| (****************************************************************************)
|
| << RUNG 21 >>
|
| RD_OK DO_WRT
|%T00002 %T00009
+——] [—————————————————————————————————————————————————————————————————————(^)——
|
| << RUNG 22 >>
|
|WRT_OK DO_READ
|%T00005 %T00008
+——] [—————————————————————————————————————————————————————————————————————(^)——
|
| (****************************************************************************)
| (* If LANIFOK transitions from 0—>1, restart read/write logic. This should *)
| (* only happen if the Ethernet Controller intiating communciations is *)
| (* restarted. *)
| (****************************************************************************)
|
| << RUNG 24 >>
|
|LANIFOK RESTART
|%I00048 %T00010
+——] [—————————————————————————————————————————————————————————————————————(^)——
|
| (****************************************************************************)
| (* If an error is detected in a read or write, toggle bits to restart *)
| (* read or write. This is done on a one—shot basis. *)
| (****************************************************************************)
|
Program: LANRDWR A:\LANRDWR Block: _MAIN