SOFTWARE SETUP
GENERAL
It is recommended to set up the Milltronics device as a 1⁄4 rack size, to conserve remote
rack space available to the PLC. As discrete I/O operation is very limited when using 1⁄4
rack size configuration, block transfer read and write commands are recommended.
Avoid discrete I/O as it does not provide any advantage over block transfers. (Transfer
speed is not an issue, as transfer rates are much greater than the rate where new
readings are generated by the Milltronics device.)
It is also recommended to exercise caution when deciding how often to trigger the BTR
and BTW instructions. Too often increases the delay of all block transfers on the
Remote I/O link. A recommended guideline is to trigger the BTR and BTW instructions
no faster than every 0.3 seconds.
SPECIFIC PARAMETERS
P751
baud rate
Sets the baud rate for Remote I/O communication between
Milltronics device and Allen-Bradley.
values:
0 = 57.6 kbaud
1 = 115.2 kbaud
2 = 230.4 kbaud
The default value is 0.
P752
rack number
Enter the rack number (octal) that the Milltronics device has been assigned
on the Remote I/O link. The valid range is 01 – 73. Check your PLC manual
for the supported range.
The default value is 2.
P753
starting group
Sets the starting group number for the Milltronics device.
starting group
rack size (P754)
values:
0
1, 2, 3 or full
2
1, 2 or 3 /4
4
1 or 2 /4
6
1/4
The default value is 0.
PL-533
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Milltronics SmartLink 3/31/97 1:16 PM Page 6
