Siemens Simovert Masterdrives Compendium page 974

SrcSLBTrnsData
P751 (0)
.01
K
.02
K
.03
K
.04
K
.05
K
.06
K
.07
K
.08
K
.09
K
.10
K
.11
K
.12
K
.13
K
.14
K
.15
K
.16
K
P756 (0)
.01 ... 08
K
1 2
SIMOLINK board
Transmitting
Transmit words
SLB TrnsData
r752.01 to .16
1
Channel 0
2
3
Channel 1
4
5
Channel 2
6
7
Channel 3
8
9
Channel 4
10
11
Channel 5
12
13
Channel 6
14
15
Channel 7
16
Special data
4 double words
see function diagram 160a
3 4
Bus cycle
(example for 3 nodes and 2 channels)
3.1 3.0
NOP NOP 2W 2W
Pause SYNC
Bus cycle time
- Each module can read out all circulating telegrams.
- Each telegram consists of 2 words = 2 x 16 bits.
- Each module can only write the telegrams of its own module address.
- In the above example, module 1 can write telegrams 1.0 and 1.1.
- The dispatcher (module address 0) provides the SYNC signal after the defined bus cycle time.
- The number of nodes is determined by establishing the bus cycle time and the number of channels per module.
- The dispatcher transmits as many telegrams with ascending node addresses and channel numbers as the
bus cycle time permits.
- If the total number of telegrams requires less time than the bus cycle time, the time up to the SYNC signal
is filled with NOP (No Operation) telegrams.
- The total number of telegrams (modules x channels) is limited to 1023, including pause and SYNC.
Transmitting 32-bit words:
If the same double-word connector is connected up to two successive connector
indices, this is transferred as a 32 bit word.
Examples:
1.
KK1000
KK1000
2.
KK2000
KK1000
KK0900
5 6
V2.5
fp_mc_160_e.vsd
23.10.02
Node 1
Transmit words 3 and 4
Transmit
2.1 2.0 1.1 1.0 0.1 0.0
2W 2W 2W 2W 2W 2W
P751 (0)
.02
1000
KK1000 is transmitted as
.03 a 32-bit word
1000
P751 (0)
.02
2000
Only the high part of KK1000
.03
and KK2000 is transmitted
1000
as a 16-bit word.
.04
900
7
Function diagram
MASTERDRIVES MC
n959.21 = 2
SIMOLINK
E
TxD
O
8
- 160 -