Device functions
Version 2
RES-5011
Page 23
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-5011 from the status infor-
mation and the control functions, to simplify decoding by the EtherNet/IP
TM
scanner.
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 EtherNet/IP
TM
scanner to the RES-5011. It con-
tains the set point as well as the control functions such as START or AUTOCAL for the RES-5011. These functions
are explained in the following.
8.5.1
Automatic zero calibration AUTOCAL (AC)
Owing to the automatic zero calibration (AUTOCAL) function, there is no need to adjust the zero point manually
on the controller. This function adjusts the controller to the current and voltage signals present in the system and
calibrates it to the value which is predefined in the parameter data (
section 8.7.4 "Variable calibration tempera-
ture" on page 49). If no parameter data is transferred by the EtherNet/IP
TM
scanner, the default value is 20 °C.
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