Remote-processing RPC-330 Manuel d'utilisateur télécharger pdf (Page 29)

CALENDAR/CLOCK SECTION 7

Page 7-1 RPC-330

DESCRIPTION

An optional DS1216DM calendar/clock module may be

installed in U5. The DS1216DM also battery backs

RAM.

The DS1216DM from Remote Processing is a modified

version of the Dallas DS1216D. An internal reset line

has been cut. When a 512K RAM is installed, an

additional line must be cut. Contact Remote Processing

for details.

Battery life depends greatly upon the ambient

temperature. Battery life degrades up to 50% at 50°C,

using 25°C as a reference. RAM size and type also

affect battery life. Generally, you can expect a battery

life of 3 to 5 years.

Accuracy is about 1 minute/month and is not adjustable.

Hours are expressed in 24-hour fo rma t.

Refer to the RPBASIC-52 Software Supplement for

more command information.

The clock module is installed by first r emoving the IC in

U5. Then, install the DS1216DM into the socket. Install

the RAM chip into the socket. When installing a 32K

RAM chip, the top two pins in the DS1216DM are left

open.

Refer to SECTION 5 for information about using battery

backed RAM and jumper setting when installing a 512K

RAM.

WARNING: An additional modification to the

DS1216DM is necessary when

installing a 512K RAM. Contact

Remote Processing for details.

SETTING DATE AND TIME

Set the date to turn on the clock module. Date and time

are set while running a progr am or in the immediate

mode. Date and time are treated as number s and not

strings. To set the date and time:

DATE 97,02,10

TIME 13,23,43

Date is February 10, 1997. The time is set to 1:23:43

PM.

NOTE: The clock module is turned off as shipped from

the factory. DATE and TIME functions return

a HARDW ARE error until DA TE is set first.

To retrieve date and time as part of a program:

100 PRINT "Time: ",

110 FOR N=0 TO 2

120 PRINT TIME(N),

130 NEXT

140 PRINT "Date: ",

150 FOR N=0 TO 2

160 PRINT DATE(N),

170 NEXT

180 PRINT CR,

190 GOTO 100

run

Time: 13 24 12 Date: 97 2 10

When the clock module is missing, defective, or the date

has not been set, a HARD WARE er ror (code 50 at

address 101H) is returned by RPBASIC when a DATE

or TIME function is performed. Use ONE RR to trap for

this error and report the problem.

COMMANDS

The following is a list of RPBASIC-52 commands for

the calendar/clock.

Command Function

DATE Sets date and tur ns on module

DATE(n) Returns date

TIME Sets time

TIME(n) Returns time

1 2 ... 24 25 26 27 28 29 30 31 32 33 34 ... 47 48

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Remote-processing RPC-330 Manuel d'utilisateur Page 29

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