Modbus Commands

key-exchange

The type of key to exchange for the encryption format:

zAny—Any key exchange that is valid is used (this does not, however, include ADH keys).

zRSA—This is an RSA key exchange using an RSA key and certificate.

zEDH-RSA—This is an EDH key exchange using an RSA key and certificate.

zEDH-DSS—This is an EDH key exchange using a DSA key and certificate.

zADH—This is an anonymous key exchange which does not require a private key or certificate. Choose this key if you do not want to authenticate the peer device, but you want the data encrypted on the SSL/TLS connection.

The default is Any.

hmac

Select the key-hashing for message authentication method for your encryption type:

zAny

zMD5

zSHA1

The default is Any.

Show SSL

Description

Shows the SSL/TLS settings/information.

User Level

Normal, Admin

Syntax

show ssl

Modbus Commands

Set Modbus Gateway

Description

Sets the Modbus parameters for the IOLAN when it is operating as a Modbus Gateway.

User Level

Admin

Syntax

set modbus gateway [addr-mode embeddedre-mapped]

 

[broadcast onoff] [char-timeout <number>]

 

[req-next-delay <number>] [exceptions onoff]

 

[idle-timer <number>] [mess-timeout <number>]

 

[port <TCP/UDP_port>] [req-queuing onoff]

 

[remapped-id <1-247>] [ssl onoff]

Options

addr-mode

 

Determines if the original UID address will be embedded in the transmission header or

 

if a specified (remapped) UID will be embedded in the transmission header.

 

broadcast

 

When enabled, a UID of 0 (zero) indicates that the message will be broadcast to all

 

Modbus Slaves. The default is Off.

 

char-timeout

 

Used in conjunction with the Modbus RTU protocol, specifies how long to wait, in

 

milliseconds, after a character to determine the end of frame. The default is 30 ms.

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Perle Systems MDC, SDS manual Modbus Commands, Show SSL, Set Modbus Gateway, Key-exchange, Hmac

SDS, MDC specifications

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