Rockwell Automation 1746-BTM Barrel Temperature Control Module User Manual User Manual
Page 15

Publication 1746-UM010B-EN-P - April 2001
Getting Started 1-3
Figure 1.2 TPO timing diagram
The TPO duty cycle (Y) must be considerable shorter in time than
the system dead time. For additional information, Refer to Autotune
a Loop on page 5-2.
The following memory map shows you how the SLC processor’s
output and input image tables are defined for the module. See Table
9.A: BTM201.rss N7 Data Table on page 9-2.
TPO bit
On
Off
X
Y
CV% = (40%)
X = on time (2.0 sec)
Y = TPO period (5.00 sec)
data in parenthesis refers to
sample program values.
Bit 15
Bit 0
Address
Loop 1 configuration data
word 0
O:e.0
Loop 2 configuration data
word 1
O:e.1
Loop 3 configuration data
word 2
O:e.2
Loop 4 configuration data
word 3
O:e.3
Loop 1 run setpoint value
word 4
O:e.4
Loop 2 run setpoint value
word 5
O:e.5
Loop 3 run setpoint value
word 6
O:e.6
Loop 4 run setpoint value
word 7
O:e.7
Loop 1 manual output value
word 8
O:e.8
Loop 2 manual output value
word 9
O:e.9
Loop 3 manual output value
word 10
O:e.10
Loop 4 manual output value
word 11
O:e.11
miscellaneous control bits
word 12
O:e.12
not used
word 13
O:e.13
not used
word 14
O:e.14
not used
word 15
O:e.15
Loop 1 temperature
word 0
I:e.0
Loop 2 temperature
word 1
I:e.1
Loop 3 temperature
word 2
I:e.2
Loop 4 temperature
word 3
I:e.3
Loop 1 configuration status
word 4
I:e.4
Loop 2 configuration status
word 5
I:e.5
Loop 3 configuration status
word 6
I:e.6
Loop 4 configuration status
word 7
I:e.7
Loop 1 control status and TPO
word 8
I:e.8
Loop 2 control status and TPO
word 9
I:e.9
Loop 3 control status and TPO
word 10
I:e.10
Loop 4 control status and TPO
word 11
I:e.11
If using the sample program,
variables in words 12-15, including
current CVs, are multiplexed and
scanned into N10:200-243
word 12
I:e.12
word 13
I:e.13
word 14
I:e.14
word 15
I:e.15
BTM
Module
Output Image
Slot e
Input Image
Slot e
output
image
16 words
input
image
16 words
SLC 5/0x
I/O Image Table
Slot e portion of
SLC image table
for BTM module