26
525 Programmable Motion Controller

In 525's, the signal terminator capacitance is approximately 1000pf and a typical

cable capacitance runs about 30pf/ft. Therefore, the cable length should be limited

to 50 feet. Longer serial interface cables are not recommended.

In multi-drop configurations, the ground reference (earth ground) for each

communicating device must be at the same potential. The further apart the

communicating devices, the more difficult this is to achieve. Therefore, it is a good

idea to keep the multi-drop loop as short as possible. This condition is not as critical

if all of the communicating devices are optically isolated.

It is very important that the serial cables are not altered in the field. It is also

important to follow any recommendations given in the product manuals on how to

connect or terminate these cables.

NOTE: As a general rule, the minimum cable bend radius is ten times the cable outer diameter.Figure 28 TIX-XXX & TIA-XXX Wiring Diagrams (525 PMC To IBM Serial Port) Figure 29 DD-XXX Wiring Diagram ( Multi-Drop Cable)NOTE: For wiring diagrams of Emerson Motion Control T-60 (NMA-XXX), T-61 (NMB-XXX) or T-21 refer to the operators manual that accompanied that device.
FX DRIVE
SERIAL A
5
2
1
3RX
SHLD
GND
9 PIN MALE
"D" TYPE
TIX-25 CABLE
COMPUTER/TERMINAL
TYPICAL IBM 25F PIN RS232 STYLE
7
2
3REC
GND
XMIT REC
SHIELD
FX DRIVE
SERIAL A
5
2
1
3RX
SHLD
GND
9 PIN MALE
"D" TYPE
TIX-25 CABLE
COMPUTER/TERMINAL
TYPICAL IBM 9F PIN STYLE
5
3
2REC
GND
XMIT REC
SHIELD
FX DRIVE 2
SERIAL A
3
9
8
7
6
5
1
4
2RX
N/C
TXM
RXM
GND
MEN
TX
N/C
9 PIN MALE
"D" TYPE
FX DRIVE 1
SERIAL B
3
9
8
7
6
5
1
4
2RX
N/C
TXM
RXM
GND
MEN
TX
N/C
9 PIN MALE
"D" TYPE
SHLD