Rice Lake Signal Conditioning Transmitter/Indicators - Manual (Page 39)

Operation 35
3.6 SCT20-DN (DeviceNet)
The instrument works as a slave in a DeviceNet network.
Load the included eds file (TLBDNT.eds) in the DeviceNet master’s development instrument.
The data exchanged by SCT20-DN are:
Possible Command To Send To The Command Register
If it is necessary to perform the same command twice in a row, send the command 0 between a command and
the other.
Gross Weight, Net Weight:
The weight values are expressed as positive integer numbers, including decimal figures but without decimal point.
Read the “Status Register” to obtain information about sign and possible errors on the weight.
Setpoints:
The Setpoints are weight values expressed as positive integer numbers, including decimal figures but without
decimal point.
• READING: send to the Command Register the reading command of the required setpoint (e.g. 90 for reading
setpoint 1) and read the content of the "Setpoint" register.
• WRITING: write the weight value to be set in the “Setpoint” and send to the Command Register, the writing
command of the required setpoint (e.g. 93 for writing setpoint 1).
Setpoints are stored to the RAM volatile memory and lost upon instrument power off. To save them
permanently in the EEPROM memory, so that they are maintained upon the instrument power on, it is
necessary to send the command 99 “Save data in EEPROM” of the Command Register.
Digital Inputs Status
Bit a 1: input high; Bit a 0: input is low
Outgoing Data from SCT20-DN (Read) Addresses
Gross Weight [4 bytes] 0x0000-0x0003
Net Weight [4bytes] 0x0004-0x0007
Setpoint [4 bytes] 0x0008-0x000B
Status Register [2 bytes] 0x000C-0x000D
Digital Inputs Status [1 byte] 0x000E
Digital Outputs Status [1 byte] 0x000F
Input Data to SCT20-DN (Write) Addresses
Command Register [2 bytes] 0x0000-0x0001
Digital Outputs Command [2 bytes] 0x0002-0x0003
Setpoint [4 bytes] 0x0004-0x0007
0 No command 90 Read setpoint 1
7 Semi-automatic tare (NET display) 91 Read setpoint 2
8 SEMI-AUTOMATIC ZERO 92 Read setpoint 3
9 GROSS display 93 Write setpoint 1
21 Keypad lock 94 Write setpoint 2
22 Keypad and display unlock 95 Write setpoint 3
23 Keypad and display lock 99 Save data in EEPROM
9999 Reset (reserved)
Bit 0 INPUT 1 status Bit 4
Bit 1 INPUT 2 status Bit 5
Bit 2 Bit 6
Bit 3 Bit 7
Note
Note
DeviceNet