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Network Force/Torque Sensor System

Net F/T Manual - ATI Industrial Automation

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Net F/T Installation and Operation Manual<br />

Document: 9620-05-net ft-11<br />

Table 15.2—Request Short Data<br />

Message<br />

to Net F/T<br />

Response<br />

from Net<br />

F/T<br />

CAN<br />

Identifier<br />

Data<br />

length in<br />

bytes<br />

1 st –4 th data bytes 5 th –8 th data bytes Comment<br />

Request<br />

Short Data<br />

Base<br />

Address<br />

1 0x02 (BYTE) N/A Sends a copy of force and torque<br />

data in short format (an ongoing<br />

transmission will be terminated)<br />

Fx, Tx, Fy,<br />

and Tx data<br />

Base<br />

Address<br />

+5<br />

8 Fx value (INT)<br />

Tx value (INT)<br />

Fy value (INT)<br />

Ty value (INT)<br />

X-axis force and torque values and<br />

Y-axis force and torque in short<br />

format<br />

Fz and Tz<br />

data, Status,<br />

and sample<br />

number<br />

Base<br />

Address<br />

+6<br />

8 Fz value (INT)<br />

Tz value (INT)<br />

system status (INT)<br />

sample number (INT)<br />

Z-axis force and torque values,<br />

system status word, and sample in<br />

short format.<br />

Table 15.3—Bias Command<br />

Message<br />

to Net F/T<br />

Response<br />

from Net<br />

F/T<br />

CAN<br />

Identifier<br />

Data<br />

length in<br />

bytes<br />

1 st –4 th data bytes 5 th –8 th data bytes Comment<br />

Bias<br />

Base<br />

Address<br />

1 0x04 (BYTE) N/A Zeros the force and torque readings<br />

at the current loading level.<br />

Table 15.4—Clear Threshold Latch Command<br />

Message<br />

to Net F/T<br />

Response<br />

from Net<br />

F/T<br />

CAN<br />

Identifier<br />

Data<br />

length in<br />

bytes<br />

1 st –4 th data bytes 5 th –8 th data bytes Comment<br />

Clear<br />

Threshold<br />

Latch<br />

Base<br />

Address<br />

1 0x08 (BYTE) N/A Clears the threshold latch so it can<br />

respond to subsequent conditions.<br />

15.4 Baud Rate<br />

Baud Rate is set by either hardware or software configuration to 125kbps, 250kbps or 500Kbps. The<br />

baud rate will be set by software when DIP switch positions 7 and 8 are ON. For more information refer<br />

to Section 3.10.3—Baud Rate and Table 3.3—Baud Rate Switch Settings. The factory set baud rate is<br />

500Kbps.<br />

15.5 Calculating F/T Values for CAN<br />

The Net F/T multiplies each force and torque value with a factor before it is sent over the CAN interface.<br />

This allows for sending force and torque values with the full resolution. The application program has to<br />

divide each force and torque value with a specific factor to obtain the real data.<br />

Refer to Table 14.1—DeviceNet Input Bitmap for 16-bit data handling and Table 14.2—EtherNet/IP<br />

Input Bitmap for 32-bit data handling.<br />

Pinnacle Park • 1031 Goodworth Drive • Apex, NC 27539 USA • Tel: +1.919.772.0115 • Fax: +1.919.772.8259 • www.ati-ia.com • Email: info@ati-ia.com<br />

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