8089#
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#
%ORFNV
953#
9HFWRU
#
'ULYH
#0#
+$
7968;7
a)
Unit address identifiers not recognised.
b)
An error (e.g. parity) is found in one or more of the characters up to and including (BCC).
c)
Communications loop failure perhaps due to noise or wrong baud rate selected.
d)
Hardware failure.
In these cases the computer should be programmed to 'time-out', i.e. wait for a response for a short time (160ms
minimum) before trying again.
The sequence diagram for the data send function is given in Figure 5.25.
7HUPLQDWLRQ
The termination procedure is used if the computer wishes to stop selecting a particular 620 and establish connection
with another. This is achieved by sending the 'establish connection' sequence. The computer retains Master status
and transmits an (EOT) character to reset all instruments on the data link to be responsive to the next GID-UID
address parameter.
INITIAL
ENTRY
E
O
T
ADD
RE
ENTRY
E
O
T
RE
ENTRY
PHASE (A)
PHASE (B)
MESSAGE TRANSFER
TERMINATION
ESTABLISH
CONNECTION
PROTOCOL
PROCEDURE
SENDER
SUPERVISOR
STATUS
STATUS
SLAVE
MASTER
SUPERVISORY
SLAVE
SLAVE
SLAVE
MASTER
MASTER
MASTER
SUPERVISOR
584
S
T
X
CMD
DATA
BCC
R
T
X
NO
REPLY
A
C
K
N
A
K
(VALID)
(INVALID)
SUPERVISOR
Figure 5.25 - Sending Data to the 620
8:36#
6833257
00,
#
(175,(6
....SERIAL LINKS
......PORT P3
......EI ASCII
f.....5703 SUPPORT
f.......SETPT. RATIO [233] = 1.0000
f.......INVERT SETPOINT [234] = FALSE
f.......SCALED INPUT [235] = 0.00 %
f.......RAW INPUT [584] = 0.00 %
f.......OUTPUT [236] = 0.00 %
8:36#
6833257
This unit provides the facility to run a line of drives in speed-lock without the use of a 5720 Quadraloc controller; for
accurate speed holding encoder feedback is required. Ratioed speed locking is supported, although the unit is not
intended to supplant Quadraloc in applications requiring high accuracy.
A 16-bit signal is passed between drives through a fibre-optic link and the P3 port on each 620 drive. The port
operates RS232-compatible signal levels, which the 5703 converts to light for fibre-optic transmission, and from
fibre-optic to RS232 for reception.
This manual was downloaded on www.sdsdrives.com
+44 (0)117 938 1800 - [email protected]