Rockwell Automation SA3100 Diag,Troublesht,Startup,Guide - Manual (Page 45)

Installation and Start-Up Guidelines 4-13
Analog Data Formats
Data is returned from the Flex I/O module’s analog-to-digital converter with 12-bit
resolution. The value is left-justified into a 16-bit field, reserving the most significant bit
for a sign bit.
A/D Unipolar Data 11 10 09 08 07 06 05 04 03 02 01 00
⇓ ⇓ ⇓ ⇓ ⇓ ⇓ ⇓ ⇓ ⇓ ⇓ ⇓ ⇓
Analog Value 0* 14 13 12 11 10 09 08 07 06 05 04 03 02 01 00
Input * = Always positive
A/D Bipolar Data S 10 09 08 07 06 05 04 03 02 01 00
⇓ ⇓ ⇓ ⇓ ⇓ ⇓ ⇓ ⇓ ⇓ ⇓ ⇓
Analog Value S 14 13 12 11 10 09 08 07 06 05 04 03 02 01 00
D/A Data S 11 10 09 08 07 06 05 04 03 02 01 00
Output
⇓ ⇓ ⇓ ⇓ ⇓ ⇓ ⇓ ⇓ ⇓ ⇓ ⇓ ⇓
Analog Value S 14 13 12 11 10 09 08 07 06 05 04 03 02 01 00
Table 4.3 – Analog Data Format 1
1. The value returned from the A/D converter is 12-bits long, left-justified in a 16-bit field. The most significant bit is reserved for a sign bit.
Current
(mA)
4-20 mA
Mode
0-20 mA
Mode Voltage (V)
+/- 10 Volt Mode
0-10 Volt
Mode Input Output
-10.5 -32768 -32768
0 0 -10.0 -31200 -31208
1 1560 -9.0 -28080 -28088
2 3120 -8.0 -24960 -24968
3 4680 -7.0 -21840 -21848
4 0 6240 -6.0 -18720 -18728
5 1927 7800 -5.0 -15600 -15608
6 3854 9360 -4.0 -12480 -12488
7 5782 10920 -3.0 -9360 -9368
8 7710 12480 -2.0 -6240 -6248
9 9637 14040 -1.0 -3120 -3128
10 11565 15600 0 0 0 0
11 13492 17160 1.0 3120 3120 3120
12 15420 18720 2.0 6240 6240 6240
13 17347 20280 3.0 9360 9360 9360
14 19275 21840 4.0 12480 12480 12480
15 21202 23400 5.0 15600 15600 15600
16 23130 24960 6.0 18720 18728 18728
17 25057 26520 7.0 21840 21848 21848
18 26985 28080 8.0 24960 24968 24968
19 28912 29640 9.0 28080 28088 28088
20 30840 31200 10.0 31200 31208 31208
21 32767 32760 10.5 32752 32760 32760