Device functions
Page 24
RES-5012
Version 2
8.4
Communication protocol
The communication protocol consists of 2x16 bit input words and 3x16 bit output words (from the point of view of
the controller). This protocol separates the set point and the actual value of the RES-5012 from the status infor-
mation and the control functions, to simplify decoding by the EtherCAT
®
master.
Bits 0…7 form the low byte and bits 8…15 the high byte ("INTEL format").
The 2 x 16-bit
input data
contains the set point in word
and the control functions in word
:
The 3 x 16-bit
output data
contains the actual value in word
, the status information in word
, and the error
code in word
:
8.5
Input data
The term "input data" refers to the data that is transferred from the EtherCAT
®
master to the RES-5012. It contains
the set point as well as the control functions such as START or AUTOCAL for the RES-5012. These functions are
explained in the following.
Spare
Set point / AC temperature
Name:
0
0
0
0
0
0
0
Bit no.:
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
0
Spare
Channel
Spare
Control function
Name:
0
0
0
0
0
CH2
CH1
CH0
0
0
0
MA
MP
RS
ST
AC
Bit no.:
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
0
Actual value (signed)
Name:
Bit no.:
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
0
Spare
Channel
Status information
Name:
0
0
0
MU
1
1. As from firmware version 303
CH2
CH1
CH0
SA
IA
WA
AA
AG
AL
TE
TO
RA
Bit no.:
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
0
Error code
Name:
0
0
0
0
0
0
A9
A8
A7
A6
A5
A4
A3
A2
A1
A0
Bit no.:
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
0
Start temperature (signed)
Name:
Bit no.:
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
0
