Issue 01/06

Parameter Description

r2114[2]

Run time counter

 

Min:

-

 

Datatype: U16

Unit: -

Def:

-

 

P-Group: ALARMS

 

Max:

-

Displays run time counter.

Level

3

It is the total time the drive has been powered up. When power goes value is saved, then restored on powerup. The run time counter r2114 will be calculate as followed:

-Multiply the value in r2114[0], by 65536 and then add it to the value in r2114[1].

-The resultant answer will be in seconds.

When AOP is not connected, the time in this parameter is used by r0948 to indicate when a fault has occured.

Index:

r2114[0] : System Time, Seconds, Upper Word

r2114[1] : System Time, Seconds, Lower Word

Example:

If r2114[0] = 1 & r2114[1] = 20864

We get 1 * 65536 + 20864 = 86400 seconds which equals 1 day.

P2115[3] AOP real time clock

 

 

Min:

0

CStat:

CT

Datatype: U16

Unit: -

Def:

0

P-Group:

ALARMS

Active: Immediately

QuickComm.: No

Max:

65535

Displays AOP real time.

Level

3

All of the frequency inverters have an internal time generator function which is used to time-stamp and log erroneous conditions. Therefore there is no battery-buffered real-time clock (RTC). The frequency inverters can support a software-controlled RTC where the RTC must be set from the AOP or via an interface. When using the AOP, this synchronization is automatic. When a serial interface is used, a task must be sent from the higher-level control to write into the parameter. If the AOP is withdrawn during operation, or if the bus is interrupted, then the real-time clock runs further using the runtime counter. The real-time clock is reset to zero only after power off.

The time is stored in a word array parameter P2115. This parameter number is common to all invertes. Inverters not supporting this feature would respond with parameter not recognised - a Master will ignore this. The time will be set by USS Protocol standard word array parameter write telegrams.

Within the AOP, while it is acting as a USS Master, at each tick of the heartbeat, the list of available USS Slaves will be flagged with a time update request. As the Master runs around the list of USS slaves on its next USS update cycle, if there are no higher priority tasks to perform, and the slave still has its time update flag set, then an array parameter write telegram will be issued, containing the current time. The request for that slave is cancelled if the slave responds correctly. The AOP will not need to read the time from the slave.

Time is maintained in a word array parameter and encoded as follows - the same format will be used in fault report logs.

Index

High Byte (MSB)

Low Byte (LSB)

0

Seconds (0 - 59)

Minutes (0 - 59)

1

Hours (0 - 23)

Days (1 - 31)

2

Month (1 - 12)

Years (00 - 250)

Time is measured from Jan 1st 2000. Values are in binary form.

Index:

P2115[0] : Real Time, Seconds+Minutes

P2115[1] : Real Time, Hours+Days

P2115[2] : Real Time, Month+Year

MICROMASTER 440

Parameter List

6SE6400-5BB00-0BP0

209

Page 209
Image 209
Siemens 440 manual R21142 Run time counter, P21153 AOP real time clock, 209