Rockwell Automation 2706-MB1 MESSAGEVIEW 421 SOFTWARE MANUAL - Manual (Page 80)

4–32 Planning an Application
Publication 2706-817
Assign a tag to any data type the PLC or SLC supports.
SLC File Types
File Type Read/Write Identifier File Number Element
Integer
Sub-Element
Bit Number
Output Read O 0 0-255 n/a 0-15
Input Read I 1 0-255 n/a 0-15
Status Read/Write S 2 0-82 n/a 0-15
Bit (Binary) Read/Write B 3, 9-255 0-255 n/a 0-4094
Timer Read/Write T 4, 9-255 0-255 PRE, ACC EN, TT, DN
Counter Read/Write C 5, 9-255 0-255 PRE, ACC CU, CD, DN, OV, UN
Control Read/Write R 6, 9-255 0-255 LEN, POS
EN, EU, DN, EM, ER,
UL, IN , FD
Integer Read/Write N 7, 9-255 0-255 n/a 0-15
String Read ST 9-255 0-255 LEN, DATA n/a
ASCII Read A 9-255 0-255 n/a 0-15
PLC-5 File Types
File Type Read/Write Identifier File Number Element
Integer
Sub-Element
Bit Number
Output Read O 0 0-277➀ n/a 0-17➀
Input Read➁ I 1 0-277➀ n/a 0-17➀
Status Read/Write S 2 0-127 n/a 0-15
Bit (Binary) Read/Write B 3-999 0-999 n/a 0-15999
Timer Read/Write T 3-999 0-999 PRE, ACC EN, TT, DN
Counter Read/Write C 3-999 0-99 PRE, ACC CU, CD, DN, OV, UN
Control Read/Write R 3-999 0-999 LEN, POS
EN, EU, DN, EM, ER,
UL, IN , FD
Integer Read/Write N 3-999 0-999 n/a 0-15
BCD Read/Write D 3-999 0-999 n/a 0-15
Block
Transfer
Read/Write BT 3-999 0-999 n/a n/a
Message Read MG 3-999 0-584
ERR, RLEN,
DLEN, DATA
NR, TO, EN, ST, DN,
ER, CO, EW, SD, SE
PID Read/Write PD 3-999 n/a n/a n/a
SFC Read/Write SC 3-999 n/a n/a n/a
String Read ST 9-255 0-255 LEN, DATA n/a
ASCII Read A 9-255 0-255 n/a 0-15
➀
Octal format, all other values are decimal.
➁ Remote I/O allows the MessageView to write its own output words.