Host Setting - YOKOGAWA Admag TI Series User Manual

3.2

Host Setting

To activate Fieldbus, the following settings are required for the host. Particularly, pay attention so
that the address range to use includes setting values of this product.
IMPORTANT
Do not turn off the power immediately after setting.
To improve the reliability of the device, processing to store data to EEPROM is duplexing.
If the power is turned off within 60 seconds after setting is made, the modified parameters are not
saved, and the settings may return to the original values.
Table 3.1 Operation Parameters
Symbol
V(ST) Slot-Time
V(MID) Minimum-Inter-PDU- Delay
V(MRD) Maximum-Response-Delay
V(FUN) First-Unpolled-Node
Number-of-consecutive-
V(NUN)
Unpolled-Node
V(FUN)
V(FUN)+V(NUN)
Note 1: Bridge device: A linking device which brings data from one
or more H1 networks.
Note 2: LM device: with bus control function (Link Master function)
Note 3: BASIC device: without bus control function
Figure 3.2 Available Address Range
Parameter Name
Indicates the time necessary for the immediate reply of the device.
Unit of time is in octets (256 µs). Set the maximum specification for
all devices. For this product, set a value of 4 or greater.
Indicates the minimum value of communication data intervals to
start reply. Unit of time is in octets (256 µs). Set the maximum
specification for all devices. For this product, set a value of 4 or
greater.
Indicates the worst-case time elapsed until a reply is received.
Since the unit is Slot-time, set the value so that V (MRD) x V (ST)
is the maximum value of the specifications for all devices. For this
product, set V(MRD) x V(ST) to a value of 12 or greater.
Indicates the address next to the address range used by the host.
Set 14 or more in hexadecimal notation.
Unused address range. If a large value is set, it reduces the
communication load of the bus.
0x00
Not used
0x0F
0x10
Bridge device
0x13
0x14
LM device
Unused
BASIC device
0xF7
0xF8
Default address
0xFB
0xFC
Portable device address
0xFF
<3. Getting Started>
Description and Setting
V(NUN)
F0302.EPS
18
IM 01E21A02-03EN