292
Overview of Analog Slaves Section 7-1
7-1 Overview of Analog Slaves
This section provides an overview of Analog Slaves, including details on func-
tions and setting methods for each Slave.
7-1-1 DRT2 Analog Slaves
Compared with the previous DRT1 Analog Slaves, DRT2 Analog Slaves com-
bine the maintenance functions (network power voltage monitor and Unit con-
duction time monitor) of DRT2-series Slaves with various functions of Analog
Slaves (such as scaling and peak/bottom hold). Analog Input Terminals are
also able to internally perform math on analog input values, which previously
required ladder programming in the Master CPU Unit. Analog data or temper-
ature data can be selected from the six values obtained from math operations
and allocated in the Master in combination with Generic Status Flags or other
status information. (Status information alone can also be allocated.) The Con-
figurator or explicit messages can be used to allocate data in the Master, and
to set Analog Slave functions and perform monitoring.
7-1-2 Comparison of DRT1 and DRT2 Functions
Analog Input Terminals
Slave DRT1 Series DRT2 Series
Model DRT1-AD04 DRT1-AD04H DRT2-AD04 DRT2-AD04H
Analog points 4 inputs
Input range (signals) 0 to 5 V, 1 to 5 V, 0 to
10 V,–10 to 10 V, 0 to
20 mA, 4 to 20 mA
0 to 5 V, 1 to 5 V, 0 to
10 V, 0 to 20 mA, 4 to
20 mA (–10 to 10 V not
supported)
0 to 5 V, 1 to 5 V, 0 to
10 V, –10 to 10 V, 0 to
20 mA, 4 to 20 mA
0 to 5 V, 1 to 5 V, 0 to
10 V, 0 to 20 mA, 4 to
20 mA (–10 to 10 V not
supported)
AD conversion cycle 2 ms/point (8 ms/4
points or 4 ms/2 points)
250 ms/ 4 points By setting the number
of conversion points (1
to 4 points), the con-
version cycle can be
shortened (e.g., 4
points: 4 ms max.)
Note The conversion
cycle will be
slightly differ-
ent when the
math opera-
tions are used.
250 ms/ 4 points
AD conversion data 0 to 5 V, 1 to 5 V, 0 to
10 V, 0 to 20 mA, 4 to
20 mA: 0000 to 1770
hex
–10 to 10 V: 8BB8 to
0BB8 hex
Note Signed binary
0 to 5 V, 1 to 5 V, 0 to
10 V, 0 to 20 mA, 4 to
20 mA: 0000 to 7530
hex
Note Two’s comple-
ment
0 to 5 V, 1 to 5 V, 0 to
10 V, 0 to 20 mA, 4 to
20 mA: 0000 to 1770
hex
–10 to 10 V: F448 to
0BB8 hex
Note Two’s c o m pl e-
ment
0 to 5 V, 1 to 5 V, 0 to
10 V, 0 to 20 mA, 4 to
20 mA: 0000 to 7530
hex
Note Two’s comple-
ment
Resolution 1/6,000 (full scale) 1/30,000 (full scale) 1/6,000 (full scale) 1/30,000 (full scale)
Unit power supply Supplied by local power supply terminal. Supplied by communications power supply.
Communications
power supply current
consumption
30 mA max. 90 mA max. 70 mA max.
Overall
accuracy
25°C
Voltage input:
±0.3% FS; Current input: ±0.4% FS
−10 to
55°C
0 to 55°C:
Voltage input: ±0.6% FS; Current input: ±0.8%
FS
−10 to 55°C:
Voltage input:
±0.6% FS; Current input: ±0.8%
FS
To Next Page
Loading...
Need help?
General
