Campbell CR1000 User Manual

Section 8. Operation
8.11.3.3 TCP/IP Instructions
The following CRBasic instructions that service CR1000 IP capabilities have
provisions for password protection:
• EMailRecv()
• EMailSend()
• FTPClient()
8.11.3.4 Settings — Passwords
Settings, which are accessible with DevConfig (p. 111), enable the entry of the
following passwords:
• PPP Password
• PakBus/TCP Password
• FTP Password
• TLS Password (Transport Layer Security (TLS) Enabled)
• TLS Private Key Password
• AES-128 Encrypted PakBus Communication Encryption
(p. 471) Key
See the section Status, Settings, and DTI (Registers
(p. 114)) for more information.
8.11.4 File Encryption
Encryption is available for CRBasic program files and provides a means of
securing proprietary code or making a program tamper resistant. .CR<X> files, or
files specified by the Include() instruction, can be encrypted. The CR1000
decrypts program files on the fly. While other file types can be encrypted, no tool
is provided for decryption.
The CRBasic Editor encryption facility (Menus | File | Save and Encrypt)
creates an encrypted copy of the original file in PC memory. The encrypted file is
named after the original, but the name is appended with "_enc". The original file
remains intact. The FileEncrypt() instruction encrypts files already in CR1000
memory. The encrypted file overwrites and takes the name of the original. The
Encryption() instruction encrypts and decrypts the contents of a file.
One use of file encryption may be to secure proprietary code but make it available
for copying.
8.11.5 Communication Encryption
PakBus is the CR1000 root communication protocol. By encrypting certain
portions of PakBus communications, a high level of security is achieved. See
PakBus Encryption
(p. 406) for more information.
8.11.6 Hiding Files
The option to hide CRBasic program files provides a means, apart from or in
conjunction with file encryption, of securing proprietary code, prevent it from
being copied, or making it tamper resistant. .CR<X> files, or files specified by
the Include() instruction, can be hidden using the FileHide() instruction. The
CR1000 can locate and use hidden files on the fly, but a listing of the file or the
471

Campbell CR1000 Specifications

General

Power Requirements	9.6 to 16 VDC
Data Logger Operating System	CRBasic
Memory	4 MB
Analog Inputs	16 single-ended or 8 differential
Analog Input Resolution	13 bits
Analog Input Range	+/-2.5V
Digital I/O	8
Pulse Counters	2
Communication Ports	RS-232
Operating Temperature	-25°C to +50°C
Pulse Channels	4