IBM 2790 Manual page 37

3. Set day
4. Monitor day
5. Bypass area stations
. Restore area stations
6
7. Bypass segment
. Restore segment
8
9. Stop 2790 input
10. Restore 2790 input
11. Set dual communication
12. Reset dual communications
13. 2715 restart
14. Scan area station/adapter errors
15. Send partial error log
16. Reset Two Processor switch
17. Purge core data
Display Select
The Display Select switch is a CE routine switch.
Mode
The Mode switch is a CE routine switch.
Loop Control
The Loop Control panel comes in the following three con­
figurations.
Basic Configuration. On the basic 2715, this panel shows
the status of the 2790 loop in indicator lights.
Line Transfer Switch Configuration. If the 2715 has a Line
Transfer Switch feature, the Loop Control panel has a four-
position Loop Selection switch in addition to the status
indicators.
Line Transfer Sw itch-Third Unit Configuration. If the 2715
has a Line Transfer Switch— Third Unit feature, the Loop
Control panel has a two-position Loop Selection switch in
addition to the status indicators.
CPU Interface
The CPU Interface panel provides a 2715 Model 1 with
Local/Remote power, Two-Processor Switch control, and
Active/Inactive control for a 2715 without TPS. This panel
is blank for a 2715 Model 2.
Data/Address
The Data/Address switches are used to enter data or address
parameters into the 2715.
Catalog Number Light
The Catalog Number light indicates that the Display Register
lights contain a catalog number. The catalog number indi­
cates a machine condition as follows:
Invalid panel request.
X'0001'-
X'0002'— Invalid panel request with CE switch off.
X'0005'— Area station failed to bypass.
X'0006'— Area station failed to restore.
Request invalid for local configuration.
X'0007'—
X'0008'— Invalid loop request-Start Loop with time not
set, or a bad segment address.
X'0009'— Start-Loop timeout, loop is down.
X'000E'— Area station diagnostic cannot run because
loop is down.
X'000F'— Area station diagnostic aborted by loop ERP.
The loop is already in the requested config­
x 'o o i r —
uration.
X'0014'— Invalid request when the BSC test is running.
X'0015'— Dual Communications feature not present.
Invalid time/day digits entered from panel.
X'0041'—
X'0042'— Invalid 2715 restart request-the loop is up.
Disk-write failure on error-message logout
X'0081'—
sector.
Double disk-write failure on error-message
X'0082'—
logout sector (one sector already bypassed).
X'0083'— Write failure during error-counter update.
Invalid request for canned message.
X'0084'—
No buffers available for threshold-scan message.
X'0085'—
Write failure during logout-sector initialization.
X'0086'—
Disk requested to write with a zero CCW
X'0088'—
count.
2740 intervention required (power off, out
X'0089'—
of paper, or wrong mode).
Disk hard-status error.
X'008A'—
X'008B'— Disk seek failure.
Disk timeout.
XC 008C'—
X'008D'— Disk overflow.
X'008E'— Unable to write a previously chained sector
during a bad sector correction.
X'008F'— Illegal track address (nonexistent or
control-program area).
X'0095'— Loop-adapter hardware error.
X'0096'— Segment failure.
X'0097'— 2790 loop would not sync.
X'0098'— MPX code checkpoint error.
Loop down due to lock of data buffers.
X'009A'—
2740 inoperative.
X'009B'—
X'009C'— Less than 64 sectors available on disk-loop
stopped due to this.
X'00A1'— BSC error on data set interface.
X'00A2'— BSC hardware error.
X'0FF1'—
Seek or read failure occurred while reading
in the control program.
X'0FF2'— First data word on sector A0 not correct.
X'0FF3'— General configuration byte has not been set.
IBM 2715 Transmission Control Unit 37