User Manual 08/2003 Edition

4
4 Communications via PROFIBUS DP 02.99 04.01
4.2 Process data (PZD area)
Table 4-9 Description of the individual signals in the status word (ZSW) in the pos mode, continued
Bit Signal name
Signal status, signal description
Setpoint /
12 traversing task
acknowledged (edge)
13 Drive moving/drive stationary
14
15
Actual
block number
(AktSatz)
4-102
Within the traversing block /
1/0 An edge is used to acknowledge that a new traversing
task or setpoint was transferred.
0/1 Same signal level as STW.6 (activate traversing task
(signal edge)).
1 Traversing task is executed (n 0)
The drive is stationary after it reaches its target position.
0 Signals the completion of a traversing task or standstill for
intermediate stop and stop.
1 Within the traversing block
A traversing block is active.
outside the traversing block 0 Outside the traversing block
No traversing block is active.
Load power supply available/
load power supply failed
Checkback signal
byte (RMB)
1 Load power supply available
0 Load power supply failed
This corresponds to the ”undervoltage” fault
Note:
When an undervoltage condition is detected, the
appropriate fault is signaled and ZSW.15 is set to ”0”.
Before SW 1.3 the following applies:
ZSW.15 is set to ”1”, if, when acknowledging the
fault, an undervoltage condition is no longer detected.
The following is valid from SW 1.3:
ZSW.15 is set to ”1” if an undervoltage condition is
no longer detected.
The fault itself remains until it is acknowledged.
ZSW.15 indicates the status of the load power supply,
independent of the fault and acknowledgment.
The block number of the actual traversing block is entered into this
status byte.
If no block is active, then the block number of the selected traversing
block is signaled back, i.e. the block which should be the next block to
be started.
The programmed block components ”MMStart”, ”MMStop” and
”MMPos” corresponding to the program sequence are output in this
status byte.
This means that the master has information about programmed block
for additional processing and evaluation.
Checkback signal (feedback) of the terminal status (from SW 1.4), refer
to Chapter 5.5.10
RMB.6 ––> status of terminal 1
RMB.7 ––> status of terminal 2
Siemens AG 2003 All rights reserved
SIMODRIVE POSMO A User Manual (POS1) – 08.03 Edition