Technical information

42
230V FX Series Positioning Drive Reference Manual
Serial Communication Framing Information
When using serial communication, the data must be sent as a string of continuous bits. This
string of data bits must be “framed” by start and stop bits so that valid data can be recognized.
The framework which the FX drive will recognize is as follows:
1 start bit
8 data bits *
1 stop bit
No parity bit
* The high order data bit is ignored by the drive. Therefore, a parity bit may be sent to the
drive along with only seven data bits. When transmitting, the drive will always send a zero
for the eighth data bit.
Cable Selection
The cables listed below are standard cables available from EMERSON Motion Control. The
maximum recommended cable length is governed by the cable application and the
performance parameters needed.
Performance Codes
The table above shows the allowable cable lengths that may be used without further review
by EMERSON Motion Control. Each cable is given a performance code which describes the
performance effect when cables between the “Allowable” and “Maximum” lengths are used.
These effects must be considered when using these cable lengths.
Cable Model
(Part Number)
Allowable Length
w/o Review (Feet)
Maximum Length
(Feet)
Performance Code
ECS-XXX 100 200 A
ECM-XXX 100 200 A
ECL-XXX 100 200 A
RC-XXX 100 200 A
ETWF-XXX 100 200 A
ECF-XXX 100 200 A
TIX-XXX 50 50 B
TIA-XXX 50 50 B
TD-XXX 50 50 B
NMA-XXX 50 50 B
NMB-XXX 50 50 B
DD-XXX 50 50 B
DPC-XXX 25 50 C
MSC, SSC-XXX 100 100 D