IBM 2790, Manual

Page: 52 / 88

• Request Format
System/360—
d i —not used
d2, d3, d
4
=
3
-digit work number (EBCDIC)
CE Panel-
a. Set the Panel Select switch to SET TIME DAY
position.
b. Enter X T ’ and the three-hex-digit work day numbers.
No data checking is performed.
c. Press the Panel Request pushbutton.
units hour digits, and the low byte displays the tens
and units minute digits.
X 'E S '-S e t Time
• Function—Sets the Real-Time Clock that time-stamps all
user data at the transaction level.
Note: An X‘C3’, ‘C4’, or ‘C7’ request must be
made at least once after an ICPL to enable time to be
sent to the 2790 system
• Response Format
System/360—No response generated.
CE Panel—Standard response (X‘E2F0’ to Display Reg).
X 'E 3 -M o n ito r Work Day
• Function-M onitors the work day number previously
entered. This number is included in the message header
of all data transferred to System/360 or to disk.
• Request Format
System/360 and CE Panel—Standard format with no
additional data required.
• Response Format
System/360—Standard format, with the work day
number available in the message header.
CE Panel—The display register contains the three
work-day-number digits. Positions 0-3 are X‘0’, and
positions 4-15 contain the hundreds, tens, and units
digits.
X'E4'—Monitor Time
• Function—Monitors the Real-Time Clock that time-
stamps all user data at the transaction level.
• Request Format
System/360 and CE Panel—Standard format with no
additional data required.
• Response Format
System/360—Standard format, with the time available
in the transaction header.
CE Panel-The display register contains the four time
digits. The high byte displays (in hex) the tens and
• Request Format
CE Panel:
a. Set the Panel Selector switch to SET TIME DAY
position.
b. Enter the time digits into the Data/Address switches.
Positions 0-7 contain in hex the tens and units hour
digits, and positions 8-15 the tens and units minute
digits.
c. Press the Panel Request pushbutton.
• Response Format
CE Panel:
a. Positive—The time digits are contained in the corres­
ponding display register positions.
b. Negative—Not used.
c. Invalid—Catalog number X‘0041’ is set into the dis­
play register for invalid digits. Invalid digit combi­
nations are any that do not form a valid 24-hour
clock time.
X 'E 6'— Reset Read Deferred Data Mode
• Function—Causes the 2715 to stop requesting deferred
data from disk for transmitting to System/360. The
2715 will continue to send any deferred data already
queued in core for transmission.
• Request Format
System/360—Standard format.
• Response Format
No response is generated to this control request. Refer
to description of “X‘C5’-S e t Read Deferred Data Mode”
for discussion of automatically resetting ‘read deferred
data mode’.
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