User manual

Chapter 1 Series 1700 Introduction
1-9
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Module Setup Parameters
Data Format
This parameter allows you to choose the format of the position and tachometer data reported
over the backplane. The choices are Binary or BCD. It is included for PLC-2 users that require
BCD data for PLC-2 math instructions. All other applications should chose Binary data format.
hýThe Data Format parameter default value is Binary.
hýThe Data Format parameter can only be changed from the keyboard.
1) AMCI uses the most significant bit of the position and tachometer data
words as error bits. Therefore, the maximum position value that can be
transmitted in BCD is 7,999. If the sum: (Linear Offset + Scale Factor) is
greater than 8,000, the module will lock the Data Format parameter to its
Binary
value. You will not be able to change the Data Format parameter
until you decrease the value of either the Linear Offset or Scale Factor.
2) The 1731 and 1741 transfer their data using either block or single transfers.
If you select single transfers, the Data Format parameter is locked to
Binary
.
Transfer Type
If you have a 1731 or 1741 module, this parameter allows you to define how the module
will communicate over the backplane. You select either block or single transfer. All multi-
channel modules have this parameter locked to the block transfer value.
hýThe Transfer Type default value is block transfer.
hýThe Transfer Type can only be changed from the keyboard.
1) If you configure the module for
single transfers
, you will not be able to
program the Transducer Setup Parameters from the backplane.
2) If you configure the module for
single transfers
, the Data Format parameter
will be locked to its
Binary
value
3) After changing this parameter, you must cycle power to the module to
reinitialize the A-B backplane interface chip.
PLC Program
The PLC Program parameter tells the module to accept or ignore programming instructions
from the backplane. This parameter is only available if you have selected block transfers with
the Transfer Type parameter. If you selected single transfers, the Single Transfer Length
parameter is shown instead.
hýThe PLC Program default value, read only, prevents the module from accepting
programming instructions. In order to enable backplane programming, you must set
the parameter to program enabled.
hýThe PLC Program parameter is only programmable from the keyboard.
1) When backplane programmable, the module requires an additional word in
its block transfer read file. Because of this, you may have to modify your
existing data file sizes as well as your ladder logic if upgrading your system.
2) After changing this parameter, you must cycle power to the module to re-
initialize the A-B backplane interface chip.