Rice Lake SCT-4X-MODBUS TCP/IP User manual

SCT-4X-MODBUS TCP/IP
Quick Start Guide
PN 219719 Rev AMay 25, 2023

SCT-4X-MODBUS TCP/IP
2 Visit our website www.RiceLake.com
LOAD CELL 1
IN 2 IN 1 COM COM RL2 RL1
6 7 83 4 5
33 3235 34 29 2831 30 25 2427 26 21 2023 22 19 18
E +
E -
+
+
-
-
S+ S-
SIG + SIG - REF + REF - EXC + EXC -
LOAD CELL 2, 3, 4
LOAD CELL 4 LOAD CELL 3 LOAD CELL 2 LOAD CELL 1
E +
E -
+
+
-
-
S+ S-
SIG + SIG - EXC + EXC -
ETHERNET I/O PORT 1 ETHERNET I/O PORT 2
12 / 24 Vdc
1 2
J1
16 17
RS485
B(-)
A(+)
REF - REF +
+-
RS485 TERM
ON
Manuals are available from Rice Lake Weighing Systems at www.ricelake.com/manuals
Warranty information is available at www.ricelake.com/warranties
i
!
1. Electrical Schematic
Internal use
CONSUMPTION:
4.5 W max.
For UL approved models:
equipment to be powered by
12 to 24 Vdc LPS or Class 2
power source.
Load cells excitation: 5 V.
Load cells output: 6 mV/V max.
The single SENSE circuit
compensates all 4 load cells.
In LOAD CELL 2, 3, 4 connect:
SEN + to EXC +
SEN - to EXC -
!
!
!
!
INPUT: 12 to 48 Vdc
OUTPUT: 48Vac or 60Vdc, 0.5
A max

Key Functions
3© Rice Lake Weighing Systems •All Rights Reserved
CELL 4 CELL 3 CELL 2 CELL 1
PWR INPUT RELAYS FIELDBUS
MODBUS TCP/IP
485
g
kg
lb
NET
0
~
FW1
SP1 W2 SP2
35
EXC -
EXC +34
SIG - 29
SIG + 28
SIG - 25
SIG + 24
EXC - 23 REF - 21
REF 20
SIG - 19
SIG + 18
26
EXC +
22
EXC +
+
EXC +30
EXC -31
SIG + 32 SIG - 33
EXC -27
24Vdc
Earth
1
RL 1
6
RL 2
7
5
IN 1
4
COM
3
2
COM
8
GND IN 2
A +
16
B -
17
ZERO TARE MODE PRINT
g
kg
lb
NET
0
~
FW1
SP1
W2
SP2
SCT-4
2. Key Functions
Configuration menu
Decreases digit / Scrolls down.
Increases digit / Scrolls up.
Enters the setup.
Selects digit to modify.
Enters a step / Confirms.
CClears / Exits a step (no save).
Weighing mode
Clears the displayed gross weight.
Short press: executes semiautomatic tare.
Long press: allows to enter known tare.
Long press: switches between scales (only in Mode
2 “ind.Ch”).
Short press: executes data transmission on the
printer serial port.
Long press: Setpoint configuration.
CON/Standby of the instrument.
0
Weight on zero.
~
Unstable weight.
NET A tare is active.
FA function is active.
W1
SP1 Digital output 1 is active.
W2
SP2 Digital output 2 is active.
3. Indicator Light Descriptions

SCT-4X-MODBUS TCP/IP
4 Visit our website www.RiceLake.com
div.deC
TYPE
Cel.sen
span
Cel.Cap
Chan
dead.ld
zero
0.Calib
adC.uv
888888
CapaC
nChan
i n P. 0 2
i n P. 0 1
ouPu
inPus
o u . 0 1
o u . 0 2
485
fldbus
exCl.Ch
filer
unb.sr
CloCk
4. Configuration Menu
1. Reboot the weight transmitter
2. Press the key when display shows the 888888 message:
Scale configuration: capacity, resolution and decimal point (section 6).
Theoretical calibration (section 7).
Zeroing of the deal load (pre-tare zeroing) (section 8).
Calibration with sample weight (section 9).
Load cells diagnostic (section 10).
Functioning mode (section 5).
RS485 port configuration (section 13).
Digital input configuration (section 11).
Digital output configuration (section 12).
Load cell exclusion (section 15).
Date and time setting (with optional card only).
Weight filter (section 16).
Unbalancing (section 17).
Fieldbus configuration (section 14).
HOW TO EXIT THE MENU AND SAVE YOUR
CONFIGURATION
Press Ckey repeatedly until save? appears; press
to save or press Cto exit without saving.
1
2
3
4
5
6
7
8
9
10
11
12
13 1
14 1
2
2
15
16
17
18
19
20

Function Mode
5© Rice Lake Weighing Systems •All Rights Reserved
CELL 4 CELL 3 CELL 2 CELL 1
PWR INPUT RELAYS FIELDBUS
MODBUS TCP/IP
485
g
kg
lb
NET
0
~
FW1
SP1 W2 SP2
35
EXC-
EXC +34
SIG - 29
SIG + 28
SIG - 25
SIG + 24
EXC - 23 REF - 21
REF 20
SIG - 19
SIG + 18
26
EXC +
22
EXC +
+
EXC +30
EXC-31
SIG + 32 SIG - 33
EXC-27
24Vdc
Earth
1
RL 1
6
RL 2
7
5
IN 1
4
COM
3
2
COM
8
GND IN 2
A +
16
B -
17
ZERO TARE MODE PRINT
g
kg
lb
NET
0
~
FW1
SP1
W2
SP2
SCT-4
Type
Chan
n.Chan
= dep.Ch
= 2to 4
Type
Chan
n.Chan
= ind.Ch
= 1to 4
= 1to 4
CELL 4 CELL 3 CELL 2 CELL 1
PWR INPUT RELAYS FIELDBUS
MODBUS TCP/IP
485
g
kg
lb
NET
0
~
FW1
SP1 W2 SP2
35
EXC-
EXC +34
SIG - 29
SIG + 28
SIG - 25
SIG + 24
EXC - 23 REF - 21
REF 20
SIG - 19
SIG + 18
26
EXC +
22
EXC +
+
EXC +30
EXC-31
SIG + 32 SIG - 33
EXC-27
24Vdc
Earth
1
RL 1
6
RL 2
7
5
IN 1
4
COM
3
2
COM
8
GND IN 2
A +
16
B -
17
ZERO TARE MODE PRINT
g
kg
lb
NET
0
~
FW1
SP1
W2
SP2
SCT-4
TYPE
888888 dep.Ch
nChan
ind.Ch
CHAN
not visible
MODE 1 “DEP.CH”
MODE 2 “IND.CH”
Allows to connect directly the load cells, equalize them (if necessary) and transmit each load cell data and the total weight through Fieldbus.
Allows to manage up to 4 independent scales and transmit all data of each scale through Fieldbus.
not visible
5. Function Mode
Digital equalization box mode.
Multi-scale mode.
Set the number of active channels.
Select the channel to be programmed (for ind,Ch mode only).
1 1
2
2
3

SCT-4X-MODBUS TCP/IP
6 Visit our website www.RiceLake.com
CELL4 CELL3 CELL 2 CELL1
PWR INPUT RELAYS FIELDBUS
MODBUSTCP/IP
485
g
kg
lb
NET
0
~
FW1
SP1 W2 SP2
35
EXC-
EXC +
34
SIG-
29
SIG+
28
SIG-
25
SIG+
24
EXC-
23
REF-
21
REF
20
SIG-
19
SIG+
18
26
EXC +
22
EXC +
+
EXC +
30
EXC-
31
SIG+
32
SIG-
33
EXC-
27
24Vdc
Earth
1
RL1
6
RL2
7
5
IN1
4
COM
3
2
COM
8
GND IN2
A+
16
B-
17
ZERO TARE MODE PRINT
g
kg
lb
NET
0
~FW1
SP1
W2
SP2
SCT-4
CELL4 CELL3 CELL 2 CELL1
PWR INPUT RELAYS FIELDBUS
MODBUSTCP/IP
485
g
kg
lb
NET
0
~
FW1
SP1 W2 SP2
35
EXC-
EXC +34
SIG- 29
SIG+ 28
SIG- 25
SIG+ 24
EXC- 23 REF- 21
REF 20
SIG- 19
SIG+ 18
26
EXC +
22
EXC +
+
EXC +30
EXC-31
SIG+ 32 SIG- 33
EXC-27
24Vdc
Earth
1
RL1
6
RL2
7
5
IN1
4
COM
3
2
COM
8
GND IN2
A+
16
B-
17
ZERO TARE MODE PRINT
g
kg
lb
NET
0
~FW1
SP1
W2
SP2
SCT-4
888888
888888 div.deC
div.deC
...
Cel.Cap
div.deC
Cel.sen
dead.ld
div.deC
...
div.deC
div.deC
CapaC
6. Maximum Scale Capacity, Increment and Decimal Point Settings
Set the decimal point position and the minimum scale increment*1
( 0,001 - 0,002 - 0,005 - 0,01 - 0,02 - 0,05 - 0,1 - 0,2 - 0,5 - 1- 2- 5- 10 - 20 - 50 ).
Set the maximum scale capacity*2(max 999999 ).
Examples:
7. Theoretical Calibration
Set the total load cells capacity (up to 999999).
Set the load cells sensitivity (up to 999999).
Dead load weight (from -9999.9 to 99999.9).
*1Increment = the amount that the scale will increment by as weight is added or removed.
*2Maximum capacity = the maximum weight that can be measured using the scale you are creating.
1. Set div.deC and CapaC
(section 4).
2. Set in Cel.Cap the total load cells
capacity (sum of the nominal load cell
capacities).
3. Set in Cel.sen the theoretical signal
value of the load cells.
4. Enter in dead.ld step. The display
shows the theoretical dead load
value. Modify the value and/or confirm
with .
5. Save calibration (Press Ckey many
times until save? message will
appear, then press to confirm).
For a 60000 lb scale, with 2 lb
increment:
div.deC = 2
CapaC = 60000
For a 10000 g scale, with 0.1 g increment:
div.deC = 0,1
CapaC = 10000,0
For a 3000 lb scale, with 0.05 lb
increment:
div.deC = 0,05
CapaC = 3000,00
(mV/V cell1) + (mV/V cell2) + (mV/V cell3) + (mV/V cell4)
(mV/V cell1) + (mV/V cell2) + ... + (mV/V celln)
n
Insert in Cel.sen parameter, the load cells sensitivity
sum value:
For each scale to calibrate, insert in Cel.sen parameter the
average sensitivity value of the load cells:
MODE 1 “DEP.CH” MODE 2 “IND.CH”
6
7
8
4
5

Zeroing Mechanical Tare (pre-tare zeroing)
7© Rice Lake Weighing Systems •All Rights Reserved
888888
888888
888888
i
div.deC
div.deC
...
0.Calib
div.deC
div.deC
...
zero
Span
div.deC
...
adC.uv
12
8. Zeroing Mechanical Tare (pre-tare zeroing)
Zeroing of the pre-tare (or mechanical tare).
This functionality allows to zero the weigh of the scale structure (e.g. empty silo, conveyor, etc.) without changing the calibration in
memory.
9. Calibration with Sample Weight
Zero point acquisition.
1. Unload the scale. 2. Enter the zero step to adjust the
zero point.
5. Save adjustment (Press Ckey
many times until save? message will
appear, then press to confirm).
Sample weight acquisition.
3. Load the scale with span weight.
4. Enter the span step, type the span
weight value and press to adjust.
10. Load Cell Diagnostics (µV/V)
It allows to verify signal of each channel. It must be included into the range 0 to 3 mV/V.
Signal have to be stable and it have to increase by increasing the weight on the scale.
With more channels connected, it’s possible to scroll between channels with keys and .
11
10
9

SCT-4X-MODBUS TCP/IP
8 Visit our website www.RiceLake.com
888888
C
none
are
mode
off
zero
prin
dis.key
div.deC
...
inpus div.deCinp.01
inp.02
s.1 on
s.2 on
888888 div.deC
...
oUTPUT
no/nC
0 none
funC
1 Gros
2 ne
div.deCou.01
ou.02
See INP.02
Input disabled.
When input is active, transmitter keyboard is locked.
When input is active, transmitter reboots.
Emulation of Ckey.
Emulation of key.
Emulation of key.
Emulation of key.
Emulation of key.
See ou.02.
Setpoint on gross weight.
Setpoint on net weight.
Output disabled.
Normally open / normally close.
1. In weighing mode, press
for 3 second.
2. Select the setpoint to modify:
Set the output 1
setpoint value.
Set the output 2
setpoint value.
3. Press Ckey to save and exit
the menu.
11. Inputs Settings
12. Outputs Settings
12.1 HOW TO PROGRAM SETPOINTS
13 1
2 1
4
2
5
3
6
7
8
14 1
2 1
2 1
2
3

RS485 Port
9© Rice Lake Weighing Systems •All Rights Reserved
888888 ...
Fb.ini mb.Cp
... Fb.Se?
...
div.deC
...
FLDBUS div.deCYES
No
...
...
div.deC
div.deC
Au.CfG
ne.msk
ip.add
Ga.way
Fb.Se
888888 div.deC
...
485 div.deCse.add
baud
i
Static IP address.
Default gateway.
Dynamic IP address.
Subnet mask.
Set the IP address:
485 address (01 to 98).
Baud rate (1200, 2400, 4800, 9600, 19200, 38400, 57600, 115200).
The RS485 port is configured by default to communicate in Modbus RTU (section 18).
13. RS485 Port
14. Fieldbus Settings
15 1
2
16
1
3
2
4

SCT-4X-MODBUS TCP/IP
10 Visit our website www.RiceLake.com
888888 div.deC
...
exCl.Ch div.deCnone
Ch 1
Ch 2
Ch 3
Ch 4
888888 div.deC
...
unb.sr
888888 div.deC
...
filer
15. Load Cell Exclusion (for dependent channel systems)
No channel excluded.
Channel 1 excluded.
Channel 2 excluded.
Channel 3 excluded.
Channel 4 excluded.
If a load cell is broken, it’s possible to temporarily exclude the channel where it is connected and continue to weigh, pending
replacement.
!WARNING: this operation reduces the accuracy of the weighing system. We recommend use for liquid weighing or in applications
where the load is evenly distributed.
Visible only in DEP.Ch mode.
16. Weight Filter
17. Unbalancing
Visible only in DEP.Ch mode.
The instrument has an active unbalance function as standard that signals if the load is unevenly distributed, compared to the
condition saved via step STR.UNB.
Imbalance occurs when the load distribution percentage value on a cell deviates by at least 10% for more than 3 seconds.
The active weight filter is displayed, alternating with the weight value.
Press and keys to scroll through the available filters (from slowest to fastest, F1 to F10).
17 1
2
3
4
5
19
18

Programming Errors
11© Rice Lake Weighing Systems •All Rights Reserved
i
25% 25%
25% 25%
45% 20%
20% 15%
34% 23%
23% 20%
65% 15%
15% 5%
MESSAGE DESCRIPTION SOLUTION
preC. Calibration error First calibrate the zero point (zero), then proceed with sample
weight acquisition (span) (section 9).
Err.pn Calibration error Check the connection of the load cell. Verify the load cell signal is
stable, valid and greater than the previously acquired point.
Er 11 Calibration error Increase the calibration weight.
Er 12 Calibration error Check the signal from the load cell increases when weight is
incremented on the scale.
Er 37 Calibration error Repeat calibration and verify capacity and division have been
correctly set.
Er 39 Instrument not configured Transmitter needs to be configurated.
C.e r. 36 Calibration error Verify the signal from the load cell is not negative.
C.e r. 37 Calibration error Verify the signal from the load cell is not negative.
Err.mo Weight unstable
Check in adC.uv parameter that the signal is stable.
If the connection of the cells is with 4 wires, check that the sense
jumpers are inserted.
adC.err A/D converter error Converter failure. Reboot the instrument.
Cel.err Global load cell error Signal anomaly: check the load cells connection.
Er.Cel.1
...
Er.Cel.4
Load cell error Signal anomaly: check the indicated load cell connection.
18. Programming Errors
The unbalance condition is signalled via Modbus / Fieldbus or a digital output (refer to the complete manual to set the output).
Condition saved
Example:
This function is only available if EXCL.CH = NoNE.
Use this function only in systems where the load is evenly distributed.

SCT-4X-MODBUS TCP/IP
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Data Register DESCRIPTION
Gross weight
30001
Bytes 1, 2, 3 and 4 contain the Gross Weight value.
30003
Net weight
30005
Bytes 5, 6, 7 and 8 contain the Net Weight value.
30007
Input status
register
30009
Bit 15
(msb)
Bit 14
Bit 13
Bit 12
Bit 11
Bit 10
Bit 9
Bit 8 (lsb)
Active channel.
Active channel.
No function.
No function.
No function.
No function.
Status of input n. 2.
Status of input n. 1.
Bit 7(msb)
Bit 6
Bit 5
Bit 4
Bit 3
Bit 2
Bit 1
Bit 0 (lsb)
1 = Scale unloaded (gross weight = 0).
Tare PT (1 = PT tare is active).
Tare (1 = Tare is active).
Overload condition (0 = No; 1 = Overload).
Underload condition (0 = No; 1 = Underload).
Weight Stability (0 = Unstable; 1 = Stable).
Gross Weight Polarity (0 = “+”; 1 = “-”).
Net Weight Polarity (0 = “+”; 1 = “-”).
Command status
register
30011
Last received command.
Bit 7(msb)
Bit 6
Bit 5
Bit 4
Bit 3
Bit 2
Bit 1
Bit 0 (lsb)
Last command result.
Last command result.
Last command result.
Last command result.
Counting of processed commands.
Counting of processed commands.
Counting of processed commands.
Counting of processed commands.
Output status
register
30013
No Function.
Bit 7(msb)
...
Bit 2
Bit 1
Bit 0(lsb)
No function.
...
No function.
Digital output 2 status (0 = OFF; 1 = ON).
Digital output 1 status (0 = OFF; 1 = ON).
Selected page 30015 Shows the value of the selected page (3001).
µV Channel 1 30017 Bytes 16 and 17 contain the µV value of the channel 1.
µV Channel 2 30019 Bytes 18 and 19 contain the µV value of the channel 2.
µV Channel 3 30021 Bytes 20 and 21 contain the µV value of the channel 3.
µV Channel 4 30023 Bytes 22 and 23 contain the µV value of the channel 4.
Bit 15 Bit 14 Active Channel
0 0 Channel 1
0 1 Channel 2
1 0 Channel 3
1 1 Channel 4
19. Modbus TCP
19.1 MODBUS TCP REGISTERS  dep.CH /ind.ch (1 SCALE)

Modbus TCP
13© Rice Lake Weighing Systems •All Rights Reserved
Data Register DESCRIPTION
Status register
scale 1
30001
Bit 15(msb)
Bit 14
Bit 13
Bit 12
Bit 11
Bit 10
Bit 9
Bit 8 (lsb)
Not used.
Not used.
Not used.
Scale active (0 = “no”; 1 = “yes”).
Decimals (00 = 0; 01 = 1; 10 = 2; 11 = 3)
Unit of Measure (00 = “g”; 01 = “kg”; 10 = “t”; 11 = “lb”).
Bit 7(msb)
Bit 6
Bit 5
Bit 4
Bit 3
Bit 2
Bit 1
Bit 0 (lsb)
Tare PT (1 = PT tare is active).
Tare (1 = Tare is active).
Net Weight Polarity (0 = “+”; 1 = “-”).
1 = Scale unloaded (gross weight = 0).
Overload condition (0 = No; 1 = overload).
Underload condition (0 = No; 1 = underload).
Stability (0 = “unstable”; 1 = “stable”).
Gross Weight Polarity (0 = “+”; 1= “-”).
Status register
scale 2
30002 Same as Status register scale 1.
Status register
scale 3
30003 Same as Status register scale 1.
Status register
scale 4
30004 Same as Status register scale 1.
Input status
register
30005
Bit 15
(msb)
Bit 14
Bit 13
Bit 12
Bit 11
Bit 10
Bit 9
Bit 8 (lsb)
Active channel.
Active channel.
No function.
No function.
No function.
No function.
Status of input n. 2.
Status of input n. 1.
No function.
Command status
register
30006 Same as Command status register page 10.
Output status
register
30007 Same as Output status register page 10.
Selected page 30008 Shows the value of the selected page (2000).
Gross weight
scale 1
30009
Bytes 16, 17, 18 and 19 contain the Gross Weight of scale 1.
30010
Gross weight
scale 2
30011
Bytes 20, 21, 22 and 23 contain the Gross Weight of scale 2.
30012
Gross weight
scale 3
30013
Bytes 24, 25, 26 and 27 contain the Gross Weight of scale 3.
30014
Gross weight
scale 4
30015
Bytes 28, 29, 30 and 31 contain the Gross Weight of scale 4.
30016
Bit 15 Bit 14 Active Channel
0 0 Channel 1
0 1 Channel 2
1 0 Channel 3
1 1 Channel 4
19.2 MODBUS TCP REGISTERS  ind.ch (4 SCALES)

SCT-4X-MODBUS TCP/IP
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Data Register DESCRIPTION
Command 30001
Main available commands:
Value Command
00 Hex No command
01 Hex Scale zeroing
02 Hex Tare
03 Hex Preset Tare
0A Hex Setpoint 1 setting
0B Hex Setpoint 2 setting
19 Hex Digital output setting
22 Hex Reboot the weight transmitter
Parameter 1
30002
First parameter of the command.
Parameter is always expressed in absolute mode (no decimals, no sign).
30003
Parameter 2
30004
Second parameter of the command.
Parameter is always expressed in absolute mode (no decimals, no sign).
30005
30006
Used in advanced configuration, refer to the complete Fieldbus manual for further information....
30016
EXAMPLE 1
For zeroing the weight on the scale:
2. Set the command in byte 2
Register Value
30001 01 Hex
EXAMPLE 2
For setting a preset tare of 1000 lb:
1. Set the tare value in parameter 1 (byte 3, 4, 5, 6)
2. Set the command in byte 2
Register Value
30001 03 Hex
30002 00 Hex
30003 03E8 Hex
19.3 DEVICENET REGISTERS FOR COMMAND SENDING

230 W. Coleman St. • Rice Lake, WI 54868 • USA USA: 800-472-6703 • International: [phone]
© Rice Lake Weighing Systems Content subject to change without notice.
www.ricelake.com
PN 219719 Rev AMay 25, 2023