CAN-8x23 user’s manual (Revision 3.20, Ma r/08/2012) ------
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5.5 Special Functions for CAN-8x23
Analog Modules Input/Output range Entry
The CAN-8x23 Manufacturer in the Specific Profile Area defines some
entries, which are useful for the analog input/output range. On the other hand,
the object with index 0x2004~0x200B will map to the input/output range for the
slot 0 to 8, and the entry is dynamic. For the entries information in the
Manufacturer Specific Profile Area, it will be described as follows. If users use
the CAN-
8123, there is only one entry, “0x2004” provided. If users the use
CAN-
8423, there are 4 entries, “0x2004”, “0x2005”, “0x2006” and “0x2007”
provided. And each index of these entries only has two subindex, such as
subindex 00, and subindex 01.
The subindex 00 is used to distinguish in which one slot the module
inserted. If there is no module or digital module inserted in the slot, the
subindex 00 will indicate a number 0. If a slot has been inserted by any module,
the subindex 00 will indicate a number more than one. Furthermore, if a slot
module supports 4 analog output channels, there should be 4 subindexes
, “01”,
“02”, “03”, and “04”. They have different, but simply functions, for example the
subindex 01 records the channel 1 output range code. The subindex 02
records the channel 2 output range code, and so forth. If users use CAN-8x23
without any slot module, no entry will appear in the Manufacturer Specific
Profile Area.
For example, there are 4 slot modules inserted in the CAN-8423, such as
I-8057, I-8053, I-8024 and I-87017, and they are respectively inserted in the
slot 0, slot1, slot2 and slot3. Then, CAN-8423 will automatically create the
following 4 entries, index 0x2004, 0x2005, 0x2006 and 0x2007. The values of
the subindex 0 for the first two entries, 0x2004 & 0x2005, are 0 because the
first two slot modules belong to the digital I/O modules, and the values for the
last two entries, 0x2006 & 0x2007, are 1. Moreover, the values of subindex 1
for 0x2006 are 4 because of 4 analog output channels of I-8024. Under the
default situation, the values for the subindex 1 to 4 are 00. These values
indicate that all AO channel output ranges of the I-8024 are -10V~+10V. The
values of subi ndex 1 for 0x2007 are 8 because of 8 analog input channels of
I-87017. Under the default situation, the values for the subindex 1 to 8 are 00.
These values indicate that all AI channel input ranges of the I-87017 are
-10V~+10V. Users can refer to the appendix B for more detail information
