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8
Safety Precautions (continued)
Relating to the following sections:
•
How to handle your DN211 (software)
•
Examples of DN211 applications
•
RAS information
CAUTION
1. Chapter 4 describes the subjects necessary for using diverse functions of the DN211
from the T2/T2E/T2N. Chapter 5 describes, based on the subjects explained in
Chapter 4, setting the DN211 parameters, activating transmission,
inputting/outputting data with slave devices, and the procedure for reading RAS
information including event history, and sample programs.
Write programs after understanding the contents. As sample programs are basic,
you need to examine your programs from beginning to end before applying them to
actual systems.
4. How to Handle Your DN211 (software)
5. Examples of DN211 Applications
6. RAS Information (except RAS area on communication memory)
•
Allocation of slave device data to input/output data area
CAUTION
1. When a slave device has odd transmission/reception bytes in size, the actual size
plus 1 byte are allocated to the DN211 input/output area.
2. When you add a new slave device, enter a new value larger than the node addresses
of the present slave devices. For Figure 4.8, enter a value larger than "41" for the
node address of a new slave. If the node address of a new slave device is set to "18",
allocating data area of node addresses 20/30/40 will be shifted.
3. Don't change the input/output data size for slave devices (FLEX-I/O, etc.) which are
flexible in data allocation size. If changed, the slave devices with a node address
larger than that of the slave device changed data size will be shifted in their data
allocation.
4.4 Allocating Slave Device Data to the Input/Output Data Area
•
Operating mode of the T2/T2E/T2N and the DN211
CAUTION
1. If the T2/T2E/T2N turns into HALT/ERROR mode, the DN211 in run mode becomes
standby mode.
4.6.1 DN211 Operation Mode
5. Examples of DN211 Applications