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Summary of Contents for Eilersen MCE2035
- Page 1 Kokkedal Industripark 4 DK-2980 Kokkedal Denmark info@eilersen.com +45 49 180 100 +45 49 180 200 MCE2035 PROFIBUS DP MODULE Transfer the status and weight of digital loadcells Applies for: Program no.: CONCTR_4.091117.0 Document no.: 1117mu2035-2010-0a.DOC Date: 2011-05-17 Rev.:...
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Page 2: Table Of Contents
System calibration of weighing system................13 7) INSTALATION OF SYSTEM ......................14 7.1 Checklist during installation .....................14 8) HARDWARE DESCRIPTION .....................15 8.1 MCE2035 overview ........................15 8.2 Connection of power and load cells..................16 8.3 DIP-switch settings ........................17 8.4 Light Emitting Diodes.......................17 8.5 Jumpers .............................18 8.6 Profibus-DP connector......................19... -
Page 3: Introduction
With the program specified on the front page, the MCE2035 Profibus-DP module is capa- ble of transmitting weight and status for up to 4 load cells in a single telegram. Each load cell is connected to the Profibus-DP module through a load cell interface module. -
Page 4: Mce2010 Description
The load cell modules are connected to each other using the supplied cable (10 pole ribbon cable). The MCE9601 terminal module (the one with connection terminals) and the MCE2035 Profibus-DP module are connected using the same cable. Version: 2011-05-17, rev.: 0a... - Page 5 MCE2035: User manual All switches (SW1) in the load cell module must be at the correct position before use. Please notice that the switches (SW1) are only read once during power-up. If a change in the switch setting is necessary the power has to be disconnected and then reconnected (af- ter 10 seconds).
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Page 6: Mce9601 Description
MCE2035: User manual 4) MCE9601 DESCRIPTION Below the layout of the MCE9601 terminal module is shown. The MCE9601 module is used for connection between the Eilersen Electric digital load cell bus at one side and power supply/equipment at the other side. +24Vdc The J1 terminal block is used for connection of the following: •... - Page 7 MCE2035: User manual Version: 2011-05-17, rev.: 0a Page: 7...
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Page 8: Data Exchange
5) DATA EXCHANGE 5.1 Profibus-DP communication using PPO Profibus-DP communication with the MCE2035 module uses a so called ’parameter- process data object’ (PPO) consisting of 26 bytes. This telegram (object) is only used when transferring data from the slave to the master, since no data are transmitted from the master to the slave. -
Page 9: Data Formats
MCE2035: User manual 5.2 Data formats The Profibus-DP communication can transfer data in the following three data formats. If necessary please refer to other literature for further information on these formats. 5.2.1 Unsigned integer format (16 bit) The following are examples of decimal numbers represented on 16 bit unsigned integer... -
Page 10: Ieee754 Floating Point Format (32 Bit)
MCE2035: User manual 5.2.3 IEEE754 floating point format (32 bit) Representation of data on IEEE754 floating point format is done as follows: Byte1 Byte2 Byte3 Byte4 bit7 bit6 bit0 bit7 bit6 bit0 bit7 bit0 bit7 bit0 …..…. 2 ……... 2 ………….. -
Page 11: Measurement Time
MCE2035: User manual 5.3 Measurement time By use of DIP-switches it is possible to choose between 4 different measurement times. All load cells are sampled/averaged over a measurement period determined by Sw1.1 and Sw1.2 as follows: SW1.1 SW1.2 Measurement time... -
Page 12: Data Processing
MCE2035: User manual 6) DATA PROCESSING 6.1 Zeroing, calibration and weight calculation Calculation of system weight(s) is done by addition of the weight registers for the load cells belonging to the system. This is explained below. Note that the result is only valid if all status registers for the load cells in question indicate no errors. -
Page 13: Calculation Of Uncalibrated System Weight
MCE2035: User manual 6.1.3 Calculation of uncalibrated system weight Based on the load cell gross values ( ), whether they are LcGross[x] LcGrossCal[x] corner calibrated or not, a uncalibrated system weight can be calculated as either: Gross = LcGross[X1] + LcGross[X2] + …... -
Page 14: Instalation Of System
During installation of the system the following should be checked: The Profibus-DP master should be configured to communicate with the MCE2035 Profibus-DP module using the supplied GSD file. When configuring with the GSD file a MCE2035 station type is selected. -
Page 15: Hardware Description
MCE2035: User manual 8) HARDWARE DESCRIPTION 8.1 MCE2035 overview The following figure is an overview of how a MCE2035 Profibus-DP system is made using four MCE2010 load cell modules and a MCE9601 connection module: Ribbon cable for loadcell bus TXBB... -
Page 16: Connection Of Power And Load Cells
The 10 pole connector (J2) on the MCE2035 module is connected to the 10 pole connec- tors on the load cell interface modules (MCE2010) and to the 10 pole connector on the MCE9601 connection module using the supplied ribbon cable with mounted connectors. -
Page 17: Dip-Switch Settings
MCE2035: User manual 8.3 DIP-switch settings The Profibus-DP module is equipped with a 4 pole DIP-switch block that has the following function: SWITCH FUNCTION Sw1.1-Sw1.2 Measurement time Used to select the desired measurement time as described in an earlier chapter. Note that these switches are only read during power on. -
Page 18: Jumpers
MCE2035: User manual 8.5 Jumpers The Profibus-DP module is equipped with 7 jumpers. These jumpers have these functions: JUMPER FUNCTION Reserved for future use (normal default factory setting is OFF) JU2-JU4 Reserved for future use (termination) (normal default factory setting is OFF) -
Page 19: Profibus-Dp Connector
MCE2035: User manual 8.6 Profibus-DP connector The Profibus-DP module is equipped with a nine pole female sub-D connector (J1) for connection to the Profibus-DP network. The connector is a standard Profibus-DP connec- tor. Termination of the Profibus should take place in the sub-D connector (male) of the ca- ble. -
Page 20: Status Codes
MCE2035: User manual 9) STATUS CODES Status codes are shown as a 4 digit hex number. If more than one error condition is present the error codes are OR’ed together. CODE CAUSE (Hex) 0001 Invalid/missing ’sample’ ID Bad connection between communication module and load cell module.
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