• T1K-10CBL and T1K-10CBL-1 - Right side to left side expansion cable
  The T1K-10CBL(-1) connects the right side of an I/O base to the left side of the next I/O base. A maximum of two T1K-10CBL(-1) cables can be used per expansion system.
  
  
• T1K-05CBL-LL and T1K-05CBL-LL-1 - Left side to left side expansion cable
  The T1K-05CBL-LL(-1) connects the left side of an I/O base to the left side of the next I/O base. Only one T1K-05CBL-LL(-1) cable can be used per expansion system and must be used with a T1K-05CBL-RR(-1) cable. This cable cannot be connected to the left side of the network interface base.
  
  
• T1K-05CBL-RR and T1K-05CBL-RR-1 - Right side to right side expansion cable
  The T1K-05CBL-RR(-1) connects the right side of an I/O base to the right side of the next I/O base. A maximum of one T1K-05CBL-RR(-1) cable can be used per expansion system.
  NOTE: When this cable is used, the expansion I/O assignments are from right to left (reversed).
  
  
• NOTE: The (-1) version of the expansion cables pass 24V DC through on an isolated wire. (All cables pass the 5V DC base power.) Any local expansion DC input modules configured for “internal power” (current sourcing) must either have a power supply preceding it on the same base or, have a (-1) version cable pass 24V DC from a power supply on the preceeding base.

Expansion I/O cables start at $29.25

Expansion I/O Configurations Overview