YOKOGAWA UM33A/S006 User Manual
User ’s
Manual
UM33A/S006
Digital Indicator with Alarms
(with RS485 Communication Function
(Modbus Master/Monitor))
n
u
F
a
h
n
E
User’s Manual
IM UM33A-01EN-S6
<Detailed Instructions>
l
a
n
tio
c
t
n
e
m
e
c
n
IM UM33A-01EN-S6
1st Edition
Model Optional suffix code Descrip tion
UM33A
Digital Indicator with Alarms (Power supply 100-240 V AC)
(provided with retransmission output or 15 V DC loop power
supply, 2 DIs, and 3 DOs)
Type 1 (Basic) -0 Standard type
1 (Note 1 )
1 additional DO (c-contact) and RS485 communication (Max.38.4
kbps, 2-wire/4-wire)
0 NONE
-0 English (degC)
-1 English (deg C& deg F)
0 White (Light gray)
1 Black (Light ｃharcoal gray)
/LP 24 V DC loop power supply
/DC Power supply 24 V AC/DC
/CT (Note 2) Coating
/CV Terminal cover
/S006
RS485 communication (Max.38.4 kbps, 2-wire/4-wire)
MODBUS RTU Master/Moniter
Display language
TOKUCHU
Suffix code
Type 2 (Functions)
Type 3 (Open networks)
Case color
LPS option
Power supply option
Additional treatment option
Terminal Cover
Communication
Modbus
1 Introduction
1.1 Overview
The following two func tions are inco rporated into th e UM33A/S0 06.
• Modbus/RTU master functi on (read only)
• Modbus/RTU communication data monitor function
The M odbus/RTU master func tion allows th e registers of M odbus slave devic es on the same c ircuit
line to be read out. The Modbus/RTU commun ication data monitor function allows communication
between a Modbus mast er and slaves to be m onitored and the res ponse values of the s laves to be
displayed.
This instruction manu al d esc ri bes the dif fere nce b etwe e n this TOKUCHU model and standard model.
Before reading this d ocument, please read the instruction manual of standard model (document
number: IM 05P03D21-01EN)
Modbus slave
2 Model and Suffix Code
UM33A-010-□□/□/S006
□: Specified when ordering
Note 1: When the /LP option is specified, the RS-485 communication of the Type 2 code “1” is 2-wire
system.
Note 2: When the /CT op tion is specified, the product does not co nform to the safety standards ( UL and
CSA) or CE marking (Prod ucts with /CT op tion are not intended for E EA-market).
1
Modbus master functi on
Description
Notes
Read
Allowed
Write
Not allowed
Maximum number of com mands
8
8 maximum also
for displays
Supported function cod es
01 (Coil: 1 to 9999)
04 (Input Resister: 30001 to 39999)
Supported data types
Bit
FLOAT
Maximum number of slave devic es
that can be connected on the
same circuit line
31
VOLt
Up to 31 connected slaves with a maximum length of 1200 m
Slave Slave
Master
Slave
3 UM33A Modbus/RTU Master Function, Communication
Data Monitor Function
3.1 Modbus/RTU Master Function
This TOKUCHU product has a Modbus/RTU master function. The Modbus/RTU master function allows
the registers of s lave devices on the same circuit line to be read out and displayed on th e UM33A
screen.
From the master side, Modbus Coil, Discrete Inputs, Holding Resister, and Input Resister can be read
out. The supported Modbus/RTU function codes are 01 (Coil), 02 (Discrete Inputs), 03(Holding
Resister), and 04 (Inp ut Resister). Th e maximum numbe r of read commands and displa ys is eight.
02 (Discrete Inputs: 10001 to 19999)
03 (Holding Resister: 40001 to 49999)
16 bit integer (sign ed only)
32 bit integer (sign ed only)
2
3.2 Modbus/RTU Communication Data Monitor Function
Modbus communication data
monitor function
Description
Notes
Read command support
Allowed
Write command support
Not allowed
Maximum number of com mands
8
8 maximum also
for displays
Supported function cod es
01 (Coil: 1 to 9999)
04(Input Resister : 30001 to 39999)
Supported data types
Bit
FLOAT
Maximum number of devices that
can be connected on the same
circuit line
The total number of Modbus slave
devices and Modbus communication
data monitors is 3 1.
VOLt
Slave Slave
Monitor
Slave
Master
Up to 31 connected slaves and monitor with a maximum length of 1200 m
This TOKUCHU product has a Modbus/ RTU communication data monit or function. The Modb us/RTU
communication data monitor function allows the monitoring of register readout communication
between a Modbus/RTU master and slave devices on the same circuit line. This function allows
communication respo nse values transmitted on the same circuit line to be displayed on the UM 33A
screen without the U M33A sending c ommunicati on commands.
Communication to Modbus Coil, Discrete Inputs, Holding Resister, and Input Resister can be
monitored. The supported Modbus/RTU function codes are 01 (Coil), 02 (Discrete Inputs),
03(Holding Resister), and 04 (Input Resister). The maximum number of read commands and displays
is eight.
For the continuous read out co mmands s ent from the M odbus master s ide t o the sla ve side , the first
setting parameter length of data (16 bits (1 register) for the Bit and 16 bit integer data types and 32
bits (2 registers) for the 32 bit in teger and F LOAT data types) can be obtained .
02(Discrete Inputs: 10001 to 19999)
03(Holding Resister : 40001 to 49999)
16 bit integer (sign ed only)
32 bit integer (sign ed only)
3
3.3 Communication Conditions
○ Connected devices
Up to 31 devices equip ped with M odbus RTU communicatio n function ca n be connect ed.
○ Restrictions on connected devices
The communication conditions, namely the baud rate, parity, stop bit, and data length, of connected
devices must be the s ame as those o f this instru ment.
3.4 Simple flow for using Mod bus RTU M aster/Monito r
3.5 Display Erro r of Co mmunic ation P V
For the FLOAT data type, the display error of c ommunicati on PV is ± 1 digit.
4
3.6 Data Types Supported by Communication PV and Display
Decimal
Low limit
High limit
BIT
16 bit integer
32 bit integer
FLOAT
decimal point
is selected)
0
-19999
99999
High limit: 1
High limit:
-19999
High limit:
-19999
High limit:
-19999
1
-1999.9
9999.9
High limit: 0.1
High limit:
-1999.9
High limit:
-1999.9
High limit:
-1999.9
2
-199.99
999.99
High limit:
0.00
High limit:
-199.99
High limit:
-199.99
High limit:
-199.99
3
-19.999
99.999
High limit:
0.000
High limit:
-19.999
High limit:
-19.999
High limit:
-19.999
4
-1.9999
9.9999
High limit:
0.0000
High limit:
-1.9999
High limit:
-1.9999
High limit:
-1.9999
Limits
The following table s hows the display l imits for each o f the data typ es suppo rted by c ommu nicat ion
PV. For the FLOAT type, a fixed decimal place display and an auto range display (see section 3.4) are
available. The following table shows the figures for the fixed decimal place . Numbers outside the
-199 99 to 99999 range ig noring the dec imal point are d isplayed as ±OV ER.
Table 3.5.1 Data types supported by communica tion PV and d isplay limits
place
parameter
of
expression
of
expression
display range
Low limit: 0
Low limit: 0.0
0.01
Low limit:
0.001
Low limit:
0.0001
Low limit:
(signed)
display range
32767
Low limit:
3276.7
Low limit:
327.67
Low limit:
32.767
Low limit:
3.2767
Low limit:
(signed)
display range
99999
Low limit:
9999.9
Low limit:
999.99
Low limit:
99.999
Low limit:
9.9999
Low limit:
display range
(when fixed
99999
Low limit:
9999.9
Low limit:
999.99
Low limit:
99.999
Low limit:
9.9999
Low limit:
5
3.7 L-H and H-L Register Arrangements When 32 bit LONG or
k VOLt
Group display
Prefix display
Unit display
Communication
PV display
FLOAT Is Sel ected
For 32 bit integer and FLOAT types, L-H or H-L order can be selected. Set it according to the devices in use.
Figure 3.6.1 32 bit L-H regi ster arran gem ent
Figure 3.6.2 32 bit H-L regi ster ar rangem ent
3.8 Display Screen (Communication PV1 to Communication PV8)
The measured value of the specified register ( MB.ST menu) is dis played. Communic a tion PV number
is shown on the group display. Only when the acquired data type is 16 bit integer, hexadecimal
expression can be us ed by changing FRMT ( MB.ST menu) to HEX.
When the acquired data type is FLOAT and the auto range function is in use, a unit prefix is displayed.
The unit prefix displa y can be switched be tween “T, G, M, k, etc.” and exponential type (E03 , E00,
etc.). Table 3 shows the unit p refix d isplay du ring auto range . If t he value is small er t han ±p (pico)
range when auto range is in u se, “0” is displayed.
6
Loading...