Rockwell Automation MSR04XI Serial Communications Module RS232 - Manual (Page 6)

6 MSR04XI October 2005 – Issue 8
Triguard SC300E
On the lower section of the PCB are three further links, LK2, LK3 and LK4, located and
configured as follows:
LK2 (2-pin) located approximately 220mm down from the top of the module and 110mm in from
the front face, used in the voltage monitoring circuit, always fitted.
LK3 (3 -pin) located beneath the plug in daughterboard. Used for 3-2-1-or 3-2-0 operation,
factory fitted hard wired, all pins linked for 3-2-1 mode.
LK4 (3-pin) located approximately 250mm down from the top of the module and 220mm from
the front face, used for the daughterboard clock speed setting, pins 1 and 2 linked.
Table 2-1. Default link settings
Link Default setting
LK1 (3 off x 3 pin) Links not fitted
LK2 (3 off x 8 pin) Fitted
LK2 (2 pin) Fitted
LK3 (3 pin) Hard wired (all pins linked)
LK4 (3 pin) Fitted (pins 1 & 2 linked)