Advantech WISE-4610 Series User Manual page 68

Modbus Configuration - Rule Setting Tab
In this tab, you can configure the Modbus address of end devices you would like to
poll.
 Rule: There is a maximum of 8 rules that each COM port can support. Each rule
can be for a different slave device, meaning that there can be a maximum 8 of
devices connected to the COM port. Alternatively, you can use all of the rules for
polling different addresses on the same slave device.
 Slave ID: Different slave devices in the same RS-485 port have different slave
IDs; enter the slave address of the Modbus devices that are connected to the
WISE module here.
Type: This device supports Modbus data types: 01 Coil Status (0x), 02 Input

Status (1x), 03 Holding Registers (4x), and 04 Input Registers (3x). After one of
the types has been configured in the rule, the rule will be enabled and the COM
port will start polling after the configuration has been submitted successfully.
 Start Address: Enter the first address number that you are going to poll. The
address base is 1; if you are going to polling the first address of a holding regis-
ter (i.e., 40001), then simply enter the number "1" here (you do not need to enter
the entire address "40001").
 Length: Enter the length of the address that you are going to poll in this rule.
For example, if you are going to poll 40001~40008, set the length to "8." Note
that since each COM port can poll a maximum of 32 addresses, the maximum
length is 32 and the total number of all rules should not exceed 32.
 R/W: Here, you can set whether the address in this rule will be read or written.
For coil statuses and holding registers, you can make these addresses read-
only or write-only to reduce the polling effort.
 Scan Interval (unit: s): Here, you can set the scan interval for the COM port to
poll Modbus slave devices. The COM port will optimize the scan interval accord-
ing your setting. However, the read scan interval may also depend on factors
such as the Baud rate, slave device response time, delay between polls, and so
on. See the Diagnostician page to check the real response time as a reference
for the scan interval value.
 Mapping Channel: When the Modbus address of slave devices has been con-
figured in each rule, these addresses will also be mapped to the WISE module.
Coils and registers of Modbus slave devices will be mapped as bits for RESTful
web service. There are 32 continuous channels of bits and another 32 continu-
ous channels of words that can be mapped. Please ensure that the channels for
each rule do not overlap.
 Log: Here, you can set whether the data that have been polled from this rule will
be logged in the data logger.
 Deviation/Change of Status (COS): When this check box has been set, the
difference of polling values between the current poll and the last poll can trigger
the deviation/COS (change of state) for push data or log data.
 Rule Status: The web configuration interface will check whether the rule set-
tings have any overlap or conflict. The enabled rules, which are enable the rule
by setting the Type value, should have a green icon so that a "Submit" message
will be shown for you to confirm submitting the rules.
Note! After you have configured the rules, click Submit to apply them.
WISE-4610 User Manual 58